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Nothing, no-thing, or no thing is the complete absence of ''anything'', as the opposite of ''something'' and an antithesis of everything. The concept of nothing has been a matter of philosophical debate since at least the 5th century BCE. Early Greek philosophers argued that it was impossible for ''nothing'' to " exist". The atomists allowed ''nothing'' but only in the spaces between the invisibly small atoms. For them, all space was filled with atoms.
Aristotle Aristotle (; 384–322 BC) was an Ancient Greek philosophy, Ancient Greek philosopher and polymath. His writings cover a broad range of subjects spanning the natural sciences, philosophy, linguistics, economics, politics, psychology, a ...
took the view that there exists
matter In classical physics and general chemistry, matter is any substance that has mass and takes up space by having volume. All everyday objects that can be touched are ultimately composed of atoms, which are made up of interacting subatomic pa ...
and there exists
space Space is a three-dimensional continuum containing positions and directions. In classical physics, physical space is often conceived in three linear dimensions. Modern physicists usually consider it, with time, to be part of a boundless ...
, a receptacle into which matter objects can be placed. This became the paradigm for classical scientists of the modern age like
Isaac Newton Sir Isaac Newton () was an English polymath active as a mathematician, physicist, astronomer, alchemist, theologian, and author. Newton was a key figure in the Scientific Revolution and the Age of Enlightenment, Enlightenment that followed ...
. Nevertheless, some philosophers, like
René Descartes René Descartes ( , ; ; 31 March 1596 – 11 February 1650) was a French philosopher, scientist, and mathematician, widely considered a seminal figure in the emergence of modern philosophy and Modern science, science. Mathematics was paramou ...
, continued to argue against the existence of empty space until the scientific discovery of a physical vacuum.
Existentialists Existentialism is a family of philosophy, philosophical views and inquiry that explore the human individual's struggle to lead an Authenticity (philosophy), authentic life despite the apparent Absurdity#The Absurd, absurdity or incomprehensibili ...
like
Jean-Paul Sartre Jean-Paul Charles Aymard Sartre (, ; ; 21 June 1905 – 15 April 1980) was a French philosopher, playwright, novelist, screenwriter, political activist, biographer, and literary criticism, literary critic, considered a leading figure in 20th ...
and
Martin Heidegger Martin Heidegger (; 26 September 1889 – 26 May 1976) was a German philosopher known for contributions to Phenomenology (philosophy), phenomenology, hermeneutics, and existentialism. His work covers a range of topics including metaphysics, art ...
(as interpreted by Sartre) have associated ''nothing'' with
consciousness Consciousness, at its simplest, is awareness of a state or object, either internal to oneself or in one's external environment. However, its nature has led to millennia of analyses, explanations, and debate among philosophers, scientists, an ...
. Some writers have made connections between Heidegger's concept of ''nothing'' and the nirvana of Eastern religions. Modern science does not equate ''vacuum'' with ''nothing''. The vacuum in
quantum field theory In theoretical physics, quantum field theory (QFT) is a theoretical framework that combines Field theory (physics), field theory and the principle of relativity with ideas behind quantum mechanics. QFT is used in particle physics to construct phy ...
is filled with virtual particles. The quantum vacuum is often viewed as a modern version of an aether theory.


Philosophy


Western

Some would consider the study of "nothing" to be absurd. A typical response of this type is voiced by the Venetian Giacomo Casanova in conversation with his landlord, one Dr. Gozzi, who also happens to be a priest: "Nothingness" has been treated as a serious subject for a very long time. In philosophy, to avoid linguistic traps over the meaning of "nothing", a phrase such as ''not-being'' is often employed to make clear what is being discussed.


Parmenides

One of the earliest Western philosophers to consider nothing as a concept was
Parmenides Parmenides of Elea (; ; fl. late sixth or early fifth century BC) was a Pre-Socratic philosophy, pre-Socratic ancient Greece, Greek philosopher from Velia, Elea in Magna Graecia (Southern Italy). Parmenides was born in the Greek colony of Veli ...
(5th century BCE), a Greek philosopher of the monist school. He argued that "nothing" cannot exist by the following line of reasoning: To speak of a thing, one has to speak of a thing that exists. If one can speak of a thing in the past, this thing must still exist (in some sense) now, and from this he concluded that there is no such thing as change. As a corollary, there can be no such things as ''coming-into-being'', ''passing-out-of-being'', or ''not-being''. Other philosophers, for instance,
Socrates Socrates (; ; – 399 BC) was a Ancient Greek philosophy, Greek philosopher from Classical Athens, Athens who is credited as the founder of Western philosophy and as among the first moral philosophers of the Ethics, ethical tradition ...
and
Plato Plato ( ; Greek language, Greek: , ; born  BC, died 348/347 BC) was an ancient Greek philosopher of the Classical Greece, Classical period who is considered a foundational thinker in Western philosophy and an innovator of the writte ...
largely agreed with Parmenides's reasoning on nothing. Aristotle differs with Parmenides's conception of nothing and says, "Although these opinions seem to follow logically in a dialectical discussion, yet to believe them seems next door to madness when one considers the facts." In modern times,
Albert Einstein Albert Einstein (14 March 187918 April 1955) was a German-born theoretical physicist who is best known for developing the theory of relativity. Einstein also made important contributions to quantum mechanics. His mass–energy equivalence f ...
's concept of
spacetime In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualiz ...
has led many scientists, including Einstein himself, to adopt a position remarkably similar to Parmenides. On the death of his friend Michele Besso, Einstein consoled his widow with the words, "Now he has departed from this strange world a little ahead of me. That signifies nothing. For those of us that believe in physics, the distinction between past, present and future is only a stubbornly persistent illusion."


Leucippus

Leucippus (early 5th century BCE), one of the atomists, along with other philosophers of his time, made attempts to reconcile this monism with the everyday observation of motion and change. He accepted the monist position that there could be no motion without a void. The void is the opposite of being. It is ''not-being''. On the other hand, there exists something known as an absolute plenum, a space filled with matter, and there can be no motion in a plenum because it is completely full. But, there is not just one monolithic plenum, for existence consists of a multiplicity of plenums. These are the invisibly small "atoms" of Greek atomist theory, later expanded by
Democritus Democritus (, ; , ''Dēmókritos'', meaning "chosen of the people"; – ) was an Ancient Greece, Ancient Greek Pre-Socratic philosophy, pre-Socratic philosopher from Abdera, Thrace, Abdera, primarily remembered today for his formulation of an ...
(c. 460–370 BCE), which allows the void to "exist" between them. In this scenario, macroscopic objects can ''come-into-being'', move through space, and pass into ''not-being'' by means of the coming together and moving apart of their constituent atoms. The void must exist to allow this to happen, or else the "frozen world" of Parmenides must be accepted.
Bertrand Russell Bertrand Arthur William Russell, 3rd Earl Russell, (18 May 1872 – 2 February 1970) was a British philosopher, logician, mathematician, and public intellectual. He had influence on mathematics, logic, set theory, and various areas of analytic ...
points out that this does not exactly defeat the argument of Parmenides but, rather, ignores it by taking the rather modern scientific position of starting with the observed data (motion, etc.) and constructing a theory based on the data, as opposed to Parmenides' attempts to work from pure logic. Russell also observes that both sides were mistaken in believing that there can be no motion in a plenum, but arguably motion cannot ''start'' in a plenum. Cyril Bailey notes that Leucippus is the first to say that a "thing" (the void) might be real without being a body and points out the irony that this comes from a materialistic atomist. Leucippus is therefore the first to say that "nothing" has a reality attached to it.


Aristotle, Newton, Descartes

Aristotle Aristotle (; 384–322 BC) was an Ancient Greek philosophy, Ancient Greek philosopher and polymath. His writings cover a broad range of subjects spanning the natural sciences, philosophy, linguistics, economics, politics, psychology, a ...
(384–322 BCE) provided the classic escape from the logical problem posed by Parmenides by distinguishing things that are ''matter'' and things that are ''space''. In this scenario, space is not "nothing" but, rather, a receptacle in which objects of matter can be placed. The true void (as "nothing") is different from "space" and is removed from consideration. This characterization of space reached its pinnacle with
Isaac Newton Sir Isaac Newton () was an English polymath active as a mathematician, physicist, astronomer, alchemist, theologian, and author. Newton was a key figure in the Scientific Revolution and the Age of Enlightenment, Enlightenment that followed ...
who asserted the existence of absolute space.
René Descartes René Descartes ( , ; ; 31 March 1596 – 11 February 1650) was a French philosopher, scientist, and mathematician, widely considered a seminal figure in the emergence of modern philosophy and Modern science, science. Mathematics was paramou ...
, on the other hand, returned to a Parmenides-like argument of denying the existence of space. For Descartes, there was matter, and there was extension of matter leaving no room for the existence of "nothing". The idea that space can actually be empty was generally still not accepted by philosophers who invoked arguments similar to the plenum reasoning. Although Descartes' views on this were challenged by
Blaise Pascal Blaise Pascal (19June 162319August 1662) was a French mathematician, physicist, inventor, philosopher, and Catholic Church, Catholic writer. Pascal was a child prodigy who was educated by his father, a tax collector in Rouen. His earliest ...
, he declined to overturn the traditional belief, '' horror vacui'', commonly stated as "nature abhors a vacuum". This remained so until Evangelista Torricelli invented the barometer in 1643 and showed that an empty space appeared if the mercury tube was turned upside down. This phenomenon being known as the Torricelli vacuum and the unit of vacuum pressure, the torr, being named after him. Even Torricelli's teacher,
Galileo Galilei Galileo di Vincenzo Bonaiuti de' Galilei (15 February 1564 – 8 January 1642), commonly referred to as Galileo Galilei ( , , ) or mononymously as Galileo, was an Italian astronomer, physicist and engineer, sometimes described as a poly ...
, had previously been unable to adequately explain the sucking action of a pump.


John the Scot

John the Scot, or Johannes Scotus Eriugena (c. 815–877) held many surprisingly heretical beliefs for the time he lived in for which no action appears ever to have been taken against him. His ideas mostly stem from, or are based on his work of translating pseudo-Dionysius. His beliefs are essentially pantheist and he classifies evil, amongst many other things, into ''not-being''. This is done on the grounds that evil is the opposite of good, a quality of God, but God can have no opposite, since God is everything in the pantheist view of the world. Similarly, the idea that God created the world out of "nothing" is to be interpreted as meaning that the "nothing" here is synonymous with God.


G. W. F. Hegel

Georg Wilhelm Friedrich Hegel Georg Wilhelm Friedrich Hegel (27 August 1770 – 14 November 1831) was a 19th-century German idealist. His influence extends across a wide range of topics from metaphysical issues in epistemology and ontology, to political philosophy and t ...
(1770–1831) is the philosopher who brought the dialectical method to a new pinnacle of development. According to Hegel in '' Science of Logic'', the dialectical methods consists of three steps. First, a thesis is given, which can be any
proposition A proposition is a statement that can be either true or false. It is a central concept in the philosophy of language, semantics, logic, and related fields. Propositions are the object s denoted by declarative sentences; for example, "The sky ...
in
logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the study of deductively valid inferences or logical truths. It examines how conclusions follow from premises based on the structure o ...
. Second, the antithesis of the thesis is formed and, finally, a synthesis incorporating both thesis and antithesis. Hegel believed that no proposition taken by itself can be completely true. Only the whole can be true, and the dialectical synthesis was the means by which the whole could be examined in relation to a specific proposition. Truth consists of the whole process. Separating out thesis, antithesis, or synthesis as a stand-alone statement results in something that is in some way or other untrue. The concept of "nothing" arises in Hegel right at the beginning of his ''Logic''. The whole is called by Hegel the "Absolute" and is to be viewed as something spiritual. Hegel then has: *
Thesis A thesis (: theses), or dissertation (abbreviated diss.), is a document submitted in support of candidature for an academic degree or professional qualification presenting the author's research and findings.International Standard ISO 7144: D ...
: the absolute is pure being * Antithesis: the absolute is nothing * Synthesis: the absolute is becoming


Existentialists

The most prominent figure among the
existentialists Existentialism is a family of philosophy, philosophical views and inquiry that explore the human individual's struggle to lead an Authenticity (philosophy), authentic life despite the apparent Absurdity#The Absurd, absurdity or incomprehensibili ...
is
Jean-Paul Sartre Jean-Paul Charles Aymard Sartre (, ; ; 21 June 1905 – 15 April 1980) was a French philosopher, playwright, novelist, screenwriter, political activist, biographer, and literary criticism, literary critic, considered a leading figure in 20th ...
, whose ideas in his book '' Being and Nothingness'' (''L'être et le néant'') are heavily influenced by '' Being and Time'' (''Sein und Zeit'') of
Martin Heidegger Martin Heidegger (; 26 September 1889 – 26 May 1976) was a German philosopher known for contributions to Phenomenology (philosophy), phenomenology, hermeneutics, and existentialism. His work covers a range of topics including metaphysics, art ...
, although Heidegger later stated that he was misunderstood by Sartre. Sartre defines two kinds of "being" (être). One kind is ''être-en-soi'', the brute existence of things such as a tree. The other kind is ''être-pour-soi'' which is consciousness. Sartre claims that this second kind of being is "nothing" since consciousness cannot be an object of consciousness and can possess no essence. Sartre, and even more so, Jaques Lacan, use this conception of nothing as the foundation of their atheist philosophy. Equating nothingness with being leads to creation from nothing and hence God is no longer needed for there to be existence.


Eastern

The understanding of "nothing" varies widely between cultures, especially between Western and Eastern cultures and philosophical traditions. For instance, ''
Śūnyatā ''Śūnyatā'' ( ; ; ), translated most often as "emptiness", "Emptiness, vacuity", and sometimes "voidness", or "nothingness" is an Indian philosophical concept. In Buddhism, Jainism, Hinduism, and Indian philosophy, other Indian philosophi ...
'' (emptiness), unlike "nothingness", is considered to be a state of mind in some forms of
Buddhism Buddhism, also known as Buddhadharma and Dharmavinaya, is an Indian religion and List of philosophies, philosophical tradition based on Pre-sectarian Buddhism, teachings attributed to the Buddha, a wandering teacher who lived in the 6th or ...
(see Nirvana, mu, and Bodhi). Achieving "nothing" as a state of mind in this tradition allows one to be totally focused on a thought or activity at a level of intensity that they would not be able to achieve if they were consciously thinking. A classic example of this is an archer attempting to erase the mind and clear the thoughts to better focus on the shot. Some authors have pointed to similarities between the Buddhist conception of nothingness and the ideas of Martin Heidegger and existentialists like Sartre,Charles B. Guignon, ''The Cambridge Companion to Heidegger'', pp. 293–325, Cambridge University Press, 2006 . although this connection has not been explicitly made by the philosophers themselves. In some Eastern philosophies, the concept of "nothingness" is characterized by an egoless state of being in which one fully realizes one's own small part in the cosmos. The Kyoto School handles the concept of nothingness as well.


Taoism

Laozi Laozi (), also romanized as Lao Tzu #Name, among other ways, was a semi-legendary Chinese philosophy, Chinese philosopher and author of the ''Tao Te Ching'' (''Laozi''), one of the foundational texts of Taoism alongside the ''Zhuangzi (book) ...
and Zhuangzi were both conscious that language is powerless in the face of the ultimate. In Taoist philosophy, however real this world is, its main characteristic is impermanence, whereas the Tao has a permanence that cannot be described, predetermined, or named. In this way the Tao is different from any thing that can be named. It is nonexistence, in other words, nothing. Taoists also have the related concept of '' wu wei''.


Science

Despite the proven existence of vacuum, scientists through the 17th to 19th centuries thought there must be a medium pervading all space that allowed the transmission of light or gravity. Thus, in this period, it was not accepted that complete ''nothing'' was possible. Theories describing such a medium are collectively known as aether theories, so named as an evocation of the aether, the classical element from Greek philosophy. In particular, the medium that is supposed to allow the transmission of light is called the
luminiferous aether Luminiferous aether or ether (''luminiferous'' meaning 'light-bearing') was the postulated Transmission medium, medium for the propagation of light. It was invoked to explain the ability of the apparently wave-based light to propagate through empt ...
. This became the centre of attention after
James Clerk Maxwell James Clerk Maxwell (13 June 1831 – 5 November 1879) was a Scottish physicist and mathematician who was responsible for the classical theory of electromagnetic radiation, which was the first theory to describe electricity, magnetism an ...
proposed that light was an
electromagnetic wave In physics, electromagnetic radiation (EMR) is a self-propagating wave of the electromagnetic field that carries momentum and radiant energy through space. It encompasses a broad spectrum, classified by frequency or its inverse, wavelength, ...
in 1865. Early aether theories include those of Robert Hooke (1665) and
Christiaan Huygens Christiaan Huygens, Halen, Lord of Zeelhem, ( , ; ; also spelled Huyghens; ; 14 April 1629 – 8 July 1695) was a Dutch mathematician, physicist, engineer, astronomer, and inventor who is regarded as a key figure in the Scientific Revolution ...
(1690). Newton also had an aether theory, but to Newton, it was not the medium of transmission since he theorised light was composed of "corpuscles" which moved by simple mechanical motion. He needed the aether instead to explain
refraction In physics, refraction is the redirection of a wave as it passes from one transmission medium, medium to another. The redirection can be caused by the wave's change in speed or by a change in the medium. Refraction of light is the most commo ...
. Early theories generally proposed a mechanical medium of some sort, allowing the possibility of the same medium supporting both light and gravity. Proof that light has a wave nature, rather than Newton's corpuscles, was provided by Thomas Young in his 1803 interference experiment, seemingly confirming the need for an aether. The most well known attempt to detect the existence of the aether was the Michelson–Morley experiment conducted by Albert A. Michelson in 1881, later repeated with Edward W. Morley in 1887 with more precision. This failed to show the desired effect, but reluctant to abandon the aether theory, various attempts were made to modify it to account for the Michelson-Morley result. Finally,
Albert Einstein Albert Einstein (14 March 187918 April 1955) was a German-born theoretical physicist who is best known for developing the theory of relativity. Einstein also made important contributions to quantum mechanics. His mass–energy equivalence f ...
, building on the work of Hendrik Lorentz, published his theory of
special relativity In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between Spacetime, space and time. In Albert Einstein's 1905 paper, Annus Mirabilis papers#Special relativity, "On the Ele ...
in 1905 which dispenses entirely with the need for a luminiferous aether to explain the transmission of light. Although a physical medium was no longer required, the concept of aether still did not entirely vanish. It remained necessary to assign properties to the vacuum for various purposes. In some respects ''vacuum'' and ''aether'' are treated as synonyms by science. In modern
quantum field theory In theoretical physics, quantum field theory (QFT) is a theoretical framework that combines Field theory (physics), field theory and the principle of relativity with ideas behind quantum mechanics. QFT is used in particle physics to construct phy ...
, a completely empty vacuum is not at
zero-point energy Zero-point energy (ZPE) is the lowest possible energy that a quantum mechanical system may have. Unlike in classical mechanics, quantum systems constantly Quantum fluctuation, fluctuate in their lowest energy state as described by the Heisen ...
, the lowest possible energy state. First proposed by Paul Dirac in 1927, the lowest energy state has constant random vacuum fluctuations which bring into existence short-lived virtual particles. This is somewhat reminiscent of early philosophical plenum ideas, and means that ''vacuum'' and ''nothing'' are certainly not synonyms.


Mathematics

Perhaps the best-known usage of the term "nothing" in mathematics is the number 0, which is neither a
positive number In mathematics, the sign of a real number is its property of being either positive, negative, or 0. Depending on local conventions, zero may be considered as having its own unique sign, having no sign, or having both positive and negative sign. ...
nor a
negative number In mathematics, a negative number is the opposite (mathematics), opposite of a positive real number. Equivalently, a negative number is a real number that is inequality (mathematics), less than 0, zero. Negative numbers are often used to represe ...
. It's sometimes included in the set of
natural numbers In mathematics, the natural numbers are the numbers 0, 1, 2, 3, and so on, possibly excluding 0. Some start counting with 0, defining the natural numbers as the non-negative integers , while others start with 1, defining them as the positiv ...
, denoted by N, but it's always included in the set of
real numbers In mathematics, a real number is a number that can be used to measurement, measure a continuous variable, continuous one-dimensional quantity such as a time, duration or temperature. Here, ''continuous'' means that pairs of values can have arbi ...
, denoted by R. "Nothing" can also apply to
empty set In mathematics, the empty set or void set is the unique Set (mathematics), set having no Element (mathematics), elements; its size or cardinality (count of elements in a set) is 0, zero. Some axiomatic set theories ensure that the empty set exi ...
s, indicated by the symbol \emptyset, whose size or cardinality is 0.


See also

*
Absolute zero Absolute zero is the lowest possible temperature, a state at which a system's internal energy, and in ideal cases entropy, reach their minimum values. The absolute zero is defined as 0 K on the Kelvin scale, equivalent to −273.15 ° ...
* Big Bounce * Creatio ex nihilo * Dark matter * Empty * Eternal oblivion * False vacuum * Meontology * Meaning of life *
Negation In logic, negation, also called the logical not or logical complement, is an operation (mathematics), operation that takes a Proposition (mathematics), proposition P to another proposition "not P", written \neg P, \mathord P, P^\prime or \over ...
* Nihilism * No * Nobody * Vacuous truth * Void * Darkness


Citations


References

* * * * * *


Further reading

*


External links

* * * {{Authority control Existentialist concepts Perception Ontology Concepts in metaphysics Quantity