Diogenes Laërtius ( ; , ; ) was a biographer of the
Greek philosopher
Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...
s. Little is definitively known about his life, but his surviving book ''Lives and Opinions of Eminent Philosophers'' is a principal source for the history of
ancient Greek philosophy
Ancient Greek philosophy arose in the 6th century BC. Philosophy was used to make sense of the world using reason. It dealt with a wide variety of subjects, including astronomy, epistemology, mathematics, political philosophy, ethics, metaphysics ...
. His reputation is controversial among scholars because he often repeats information from his sources without critically evaluating it. In many cases, he focuses on insignificant details of his subjects' lives while ignoring important details of their philosophical teachings and he sometimes fails to distinguish between earlier and later teachings of specific philosophical schools. However, unlike many other ancient secondary sources, Diogenes Laërtius tends to report philosophical teachings without trying to reinterpret or expand on them, and so his accounts are often closer to the primary sources. Due to the loss of so many of the primary sources on which Diogenes relied, his work has become the foremost surviving source on the history of Greek philosophy.
Life
Laërtius must have lived after
Sextus Empiricus (c. 200), whom he mentions, and before
Sopater of Apamea (c. 300), who quotes him. Hence he is assumed to have flourished in the first half of the 3rd century, during the reign of
Alexander Severus
Marcus Aurelius Severus Alexander (1 October 208 – March 235), also known as Alexander Severus, was Roman emperor from 222 until 235. He was the last emperor from the Severan dynasty. Alexander took power in 222, when he succeeded his slain co ...
(222–235) and his successors.
[.]
The precise form of his name is uncertain. The ancient manuscripts invariably refer to a "Laertius Diogenes", and this form of the name is repeated by Sopater and the
Suda
The ''Suda'' or ''Souda'' (; ; ) is a large 10th-century Byzantine Empire, Byzantine encyclopedia of the History of the Mediterranean region, ancient Mediterranean world, formerly attributed to an author called Soudas () or Souidas (). It is an ...
. The modern form "Diogenes Laertius" is much rarer, used by Stephanus of Byzantium, and in a
lemma to the
Greek Anthology
The ''Greek Anthology'' () is a collection of poems, mostly epigrams, that span the Classical Greece, Classical and Byzantine periods of Greek literature. Most of the material of the ''Greek Anthology'' comes from two manuscripts, the ''Palatine ...
. He is also referred to as "Laertes" or simply "Diogenes".
The origin of the name "Laertius" is also uncertain. Stephanus of Byzantium refers to him as "Διογένης ὁ Λαερτιεύς" (''Diogenes ho Laertieus''), implying that he was the native of some town, perhaps the Laerte in
Caria
Caria (; from Greek language, Greek: Καρία, ''Karia''; ) was a region of western Anatolia extending along the coast from mid-Ionia (Mycale) south to Lycia and east to Phrygia. The Carians were described by Herodotus as being Anatolian main ...
(or another Laerte in
Cilicia). Another suggestion is that one of his ancestors had for a patron a member of the
Roman family of the
Laërtii. The prevailing modern theory is that "Laertius" is a nickname (derived from the
Homer
Homer (; , ; possibly born ) was an Ancient Greece, Ancient Greek poet who is credited as the author of the ''Iliad'' and the ''Odyssey'', two epic poems that are foundational works of ancient Greek literature. Despite doubts about his autho ...
ic epithet ''Diogenes Laertiade'', used in addressing
Odysseus
In Greek mythology, Greek and Roman mythology, Odysseus ( ; , ), also known by the Latin variant Ulysses ( , ; ), is a legendary Greeks, Greek king of Homeric Ithaca, Ithaca and the hero of Homer's Epic poetry, epic poem, the ''Odyssey''. Od ...
) used to distinguish him from the many other people called Diogenes in the ancient world.
His home town is unknown (at best uncertain, even according to a hypothesis that ''Laertius'' refers to his origin). He refers to "himself" as the member of several different schools, but this is because he uncritically copies from his sources. It is by no means certain that he adhered to any school, and he is usually more attentive to biographical details.
In the ''Lives,'' Diogenes frequently includes
epigrams from a collection that he had written of them he had written on famous men.
''Lives and Opinions of Eminent Philosophers''
The work by which he is known, ''Lives and Opinions of Eminent Philosophers'' (; ), was written in Greek and professes to give an account of the lives and opinions of the Greek philosophers.
Although it is at best an uncritical and unphilosophical compilation, its value, as giving us an insight into the private lives of the Greek sages, led
Montaigne to write that he wished that instead of one Laërtius there had been a dozen. On the other hand, modern scholars have advised that we treat Diogenes' testimonia with care, especially when he fails to cite his sources: "Diogenes has acquired an importance out of all proportion to his merits because the loss of many primary sources and of the earlier secondary compilations has accidentally left him the chief continuous source for the history of Greek philosophy".
Organization of the work
Diogenes divides his subjects into two "schools" which he describes as the
Ionian/Ionic and the Italian/Italic; the division is somewhat dubious and appears to be drawn from the lost
doxography of
Sotion. The biographies of the "Ionian school" begin with
Anaximander
Anaximander ( ; ''Anaximandros''; ) was a Pre-Socratic philosophy, pre-Socratic Ancient Greek philosophy, Greek philosopher who lived in Miletus,"Anaximander" in ''Chambers's Encyclopædia''. London: George Newnes Ltd, George Newnes, 1961, Vol. ...
and end with
Clitomachus,
Theophrastus
Theophrastus (; ; c. 371 – c. 287 BC) was an ancient Greek Philosophy, philosopher and Natural history, naturalist. A native of Eresos in Lesbos, he was Aristotle's close colleague and successor as head of the Lyceum (classical), Lyceum, the ...
and
Chrysippus
Chrysippus of Soli (; , ; ) was a Ancient Greece, Greek Stoicism, Stoic Philosophy, philosopher. He was a native of Soli, Cilicia, but moved to Athens as a young man, where he became a pupil of the Stoic philosopher Cleanthes. When Cleanthes ...
; the "Italian" begins with
Pythagoras and ends with
Epicurus
Epicurus (, ; ; 341–270 BC) was an Greek philosophy, ancient Greek philosopher who founded Epicureanism, a highly influential school of philosophy that asserted that philosophy's purpose is to attain as well as to help others attain tranqui ...
. The
Socratic school, with its various branches, is classed with the Ionic; while the
Eleatics and
Pyrrhonists are treated under the Italian. He also includes his own poetic verse about the philosophers he discusses.
The following list shows the organization of philosophers discussed in the work:
Book VII is incomplete and breaks off during the life of
Chrysippus
Chrysippus of Soli (; , ; ) was a Ancient Greece, Greek Stoicism, Stoic Philosophy, philosopher. He was a native of Soli, Cilicia, but moved to Athens as a young man, where he became a pupil of the Stoic philosopher Cleanthes. When Cleanthes ...
. From a table of contents in one of the manuscripts (manuscript P), this book is known to have continued with
Zeno of Tarsus,
Diogenes
Diogenes the Cynic, also known as Diogenes of Sinope (c. 413/403–c. 324/321 BC), was an ancient Greek philosopher and one of the founders of Cynicism (philosophy), Cynicism. Renowned for his ascetic lifestyle, biting wit, and radical critique ...
,
Apollodorus,
Boethus,
Mnesarchus,
Mnasagoras,
Nestor,
Basilides,
Dardanus,
Antipater,
Heraclides,
Sosigenes,
Panaetius,
Hecato,
Posidonius,
Athenodorus, another
Athenodorus,
Antipater,
Arius, and
Cornutus.
His chief authorities were
Favorinus
Favorinus (c. 80 – c. 160 AD) was a Roman sophist and skeptic philosopher who flourished during the reign of Hadrian and the Second Sophistic.
Early life
He was of Gaulish ancestry, born in Arelate (Arles). He received a refined educa ...
and
Diocles of Magnesia, but his work also draws (either directly or indirectly) on books by
Antisthenes of Rhodes,
Alexander Polyhistor, and
Demetrius of Magnesia, as well as works by
Hippobotus,
Aristippus,
Panaetius,
Apollodorus of Athens,
Sosicrates,
Satyrus,
Sotion,
Neanthes,
Hermippus,
Antigonus,
Heraclides,
Hieronymus, and
Pamphila.
Textual tradition
Manuscripts
There are many extant
manuscript
A manuscript (abbreviated MS for singular and MSS for plural) was, traditionally, any document written by hand or typewritten, as opposed to mechanically printed or reproduced in some indirect or automated way. More recently, the term has ...
s of the ''Lives'', although none of them are especially old, and they all lack the end of Book VII. The three most useful manuscripts are known as B, P, and F. Manuscript B (''Codex Borbonicus'') dates from the 12th century, and is in the
National Library of Naples. Manuscript P (''Paris'') is dated to the 11th/12th century, and is in the
Bibliothèque nationale de France. Manuscript F (''Florence'') is dated to the 13th century, and is in the
Laurentian Library
The Laurentian Library (Biblioteca Medicea Laurenziana or BML) is a historic library in Florence, Italy, containing more than 11,000 manuscripts and 4,500 early printed books. Built in a cloister of the Medicean Basilica di San Lorenzo di Firenze u ...
. The titles for the individual biographies used in modern editions are absent from these earliest manuscripts, however they can be found inserted into the blank spaces and margins of manuscript P by a later hand.
There seem to have been some early
Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
translations, but they no longer survive. A 10th-century work entitled ''Tractatus de dictis philosophorum'' shows some knowledge of Diogenes.
Henry Aristippus, in the 12th century, is known to have translated at least some of the work into Latin, and in the 14th century an unknown author made use of a Latin translation for his ''
De vita et moribus philosophorum'' (attributed erroneously to
Walter Burley).
Printed editions
The first printed editions were Latin translations. The first, ''Laertii Diogenis Vitae et sententiae eorum qui in philosophia probati fuerunt'' (Romae: Giorgo Lauer, 1472), printed the translation of
Ambrogio Traversari (whose manuscript presentation copy to
Cosimo de' Medici was dated February 8, 1433) and was edited by Elio Francesco Marchese. The
Greek text of the lives of Aristotle and Theophrastus appeared in the third volume of the
Aldine Aristotle in 1497. The
first edition of the whole Greek text was that published by
Hieronymus Froben in 1533. The Greek/Latin edition of 1692 by
Marcus Meibomius divided each of the ten books into paragraphs of equal length, and progressively numbered them, providing the system still in use today.
The first
critical edition of the entire text, by H.S. Long in the
Oxford Classical Texts, was not produced until 1964; this edition was superseded by
Miroslav Marcovich's
Teubner
The Bibliotheca Teubneriana, or ''Bibliotheca Scriptorum Graecorum et Romanorum Teubneriana'', also known as Teubner editions of Greek and Latin texts, comprise one of the most thorough modern collections published of ancient (and some medieva ...
edition, published between 1999 and 2002. A new edition, by
Tiziano Dorandi, was published by
Cambridge University Press
Cambridge University Press was the university press of the University of Cambridge. Granted a letters patent by King Henry VIII in 1534, it was the oldest university press in the world. Cambridge University Press merged with Cambridge Assessme ...
in 2013.
English translations
Thomas Stanley's 1656 ''History of Philosophy'' adapts the format and content of Laertius's work into English, but Stanley compiled his book from a number of classical biographies of philosophers. The first complete English translation was a late 17th-century translation by ten different persons. A better translation was made by
Charles Duke Yonge (1853), but although this was more literal, it still contained many inaccuracies. The next translation was by
Robert Drew Hicks (1925) for the
Loeb Classical Library
The Loeb Classical Library (LCL; named after James Loeb; , ) is a monographic series of books originally published by Heinemann and since 1934 by Harvard University Press. It has bilingual editions of ancient Greek and Latin literature, ...
, although it is slightly
bowdlerized. A new translation by
Pamela Mensch was published by
Oxford University Press
Oxford University Press (OUP) is the publishing house of the University of Oxford. It is the largest university press in the world. Its first book was printed in Oxford in 1478, with the Press officially granted the legal right to print books ...
in 2018. Another by
Stephen White was published by
Cambridge University Press
Cambridge University Press was the university press of the University of Cambridge. Granted a letters patent by King Henry VIII in 1534, it was the oldest university press in the world. Cambridge University Press merged with Cambridge Assessme ...
in 2020.
Legacy and assessment
Henricus Aristippus, the archdeacon of
Catania
Catania (, , , Sicilian and ) is the second-largest municipality on Sicily, after Palermo, both by area and by population. Despite being the second city of the island, Catania is the center of the most densely populated Sicilian conurbation, wh ...
, produced a Latin translation of Diogenes Laërtius's book in southern Italy in the late 1150s, which has since been lost or destroyed.
Geremia da Montagnone used this translation as a source for his ''Compedium moralium notabilium'' () and an anonymous Italian author used it as a source for work entitled ''Liber de vita et moribus philosophorum'' (written 1317–1320), which reached international popularity in the
Late Middle Ages
The late Middle Ages or late medieval period was the Periodization, period of History of Europe, European history lasting from 1300 to 1500 AD. The late Middle Ages followed the High Middle Ages and preceded the onset of the early modern period ( ...
. The monk
Ambrogio Traversari (1386–1439) produced another Latin translation in
Florence
Florence ( ; ) is the capital city of the Italy, Italian region of Tuscany. It is also the most populated city in Tuscany, with 362,353 inhabitants, and 989,460 in Metropolitan City of Florence, its metropolitan province as of 2025.
Florence ...
between 1424 and 1433, for which far better records have survived. The
Italian Renaissance
The Italian Renaissance ( ) was a period in History of Italy, Italian history between the 14th and 16th centuries. The period is known for the initial development of the broader Renaissance culture that spread across Western Europe and marked t ...
scholar, painter, philosopher, and architect
Leon Battista Alberti
Leon Battista Alberti (; 14 February 1404 – 25 April 1472) was an Italian Renaissance humanist author, artist, architect, poet, Catholic priest, priest, linguistics, linguist, philosopher, and cryptography, cryptographer; he epitomised the natu ...
(1404–1472) borrowed from Traversari's translation of the ''Lives and Opinions of Eminent Philosophers'' in Book 2 of his ''Libri della famiglia'' and modeled his own autobiography on Diogenes Laërtius's ''Life of Thales''.
Diogenes Laërtius's work has had a complicated reception in modern times. The value of his ''Lives and Opinions of Eminent Philosophers'' as an insight into the private lives of the Greek sages led the
French Renaissance philosopher
Michel de Montaigne
Michel Eyquem, Seigneur de Montaigne ( ; ; ; 28 February 1533 – 13 September 1592), commonly known as Michel de Montaigne, was one of the most significant philosophers of the French Renaissance. He is known for popularising the the essay ...
(1533–1592) to exclaim that he wished that, instead of one Laërtius, there had been a dozen.
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) criticized Diogenes Laërtius for his lack of philosophical talent and categorized his work as nothing more than a compilation of previous writers' opinions. Nonetheless, he admitted that Diogenes Laërtius's compilation was an important one given the information that it contained.
Hermann Usener (1834–1905) deplored Diogenes Laërtius as a "complete ass" (''asinus germanus'') in his ''
Epicurea'' (1887).
Werner Jaeger (1888–1961) damned him as "that great ignoramus". In the late twentieth and early twenty-first centuries, however, scholars have managed to partially redeem Diogenes Laertius's reputation as a writer by reading his book in a Hellenistic literary context.
Nonetheless, modern scholars treat Diogenes's testimonia with caution, especially when he fails to cite his sources. Herbert S. Long warns: "Diogenes has acquired an importance out of all proportion to his merits because the loss of many primary sources and of the earlier secondary compilations has accidentally left him the chief continuous source for the history of Greek philosophy."
Robert M. Strozier offers a somewhat more positive assessment of Diogenes Laertius's reliability, noting that many other ancient writers attempt to reinterpret and expand on the philosophical teachings they describe, something which Diogenes Laërtius rarely does. Strozier concludes, "Diogenes Laertius is, when he does not conflate hundreds of years of distinctions, reliable simply because he is a less competent thinker than those on whom he writes, is less liable to re-formulate statements and arguments, and especially in the case of Epicurus, less liable to interfere with the texts he quotes. He does, however, simplify."
Despite his importance to the history of western philosophy and the controversy surrounding him, according to Gian Mario Cao, Diogenes Laërtius has still not received adequate
philological
Philology () is the study of language in oral and written historical sources. It is the intersection of textual criticism, literary criticism, history, and linguistics with strong ties to etymology. Philology is also defined as the study of ...
attention. Both modern critical editions of his book, by H. S. Long (1964) and by M. Marcovich (1999) have received extensive criticism from scholars.
He is criticized primarily for being overly concerned with superficial details of the philosophers' lives and lacking the intellectual capacity to explore their actual philosophical works with any penetration. However, according to statements of the 14th-century monk
Walter Burley in his ''De vita et moribus philosophorum'', the text of Diogenes seems to have been much fuller than that which we now possess.
Reliability
Although Diogenes had a will to objectivity and fact-checking, Diogenes's works are today seen as generally unreliable from a historical perspective.
He is neither consistent nor reliable in some of his reports and some of the details he cites contain obvious errors.
Some of them were probably introduced by
copyist
A copyist is a person who makes duplications of the same thing. The modern use of the term is mainly confined to music copyists, who are employed by the music industry to produce neat copies from a composer or arranger's manuscript. However, the ...
s in the transmission of the text from antiquity, but some errors are undoubtedly due to Diogenes himself.
The reliability of Diogenes' sources have also been questioned, since he uses
comic poets
Ancient Greek comedy () was one of the final three principal dramatic forms in the theatre of classical Greece; the others being tragedy and the satyr play. Greek comedy was distinguished from tragedy by its happy endings and use of comically ex ...
as sources.
Professor Brian Gregor suggests that readers will benefit from modern scholarly assistance while reading Diogenes' biographies, since they are "notoriously unreliable".
Some scholars (e.g. Delfim Leão) state that Diogenes' unreliability is not entirely his responsibility and blame his sources instead.
Editions and translations
* ''Diogenis Laertii Vitae philosophorum'' edidit
Miroslav Marcovich, Stuttgart-Lipsia, Teubner, 1999–2002. Bibliotheca scriptorum Graecorum et Romanorum Teubneriana, vol. 1: Books I–X ; vol. 2: Excerpta Byzantina; v. 3: Indices by Hans Gärtner.
* ''Lives of Eminent Philosophers'', edited by Tiziano Dorandi, Cambridge: Cambridge University Press, 2013 (Cambridge Classical Texts and Commentaries, vol. 50, new radically improved critical edition).
*
*
* Translation by
R.D. Hicks:
**
**
**
* Translations based on the critical edition by Tiziano Dorandi:
**
**
Notes
References
Citations
Bibliography
*
*
*
*
*
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*
*
Further reading
*
Barnes, Jonathan. 1992. "Diogenes Laertius IX 61–116: The Philosophy of Pyrrhonism." In ''Aufstieg und Niedergang der römischen Welt: Geschichte und Kultur Roms im Spiegel der neueren Forschung.'' Vol. 2: 36.5–6. Edited by Wolfgang Haase, 4241–4301. Berlin: W. de Gruyter.
* Barnes, Jonathan. 1986. "Nietzsche and Diogenes Laertius." ''Nietzsche-Studien'' 15:16–40.
* Dorandi, Tiziano. 2009. ''Laertiana: Capitoli sulla tradizione manoscritta e sulla storia del testo delle Vite dei filosofi di Diogene Laerzio.'' Berlin; New York: Walter de Gruyter.
* Eshleman, Kendra Joy. 2007. "Affection and Affiliation: Social Networks and Conversion to Philosophy." ''The Classical Journal'' 103.2: 129–140.
* Grau, Sergi. 2010. "How to Kill a Philosopher: The Narrating of Ancient Greek Philosophers' Deaths in Relation to the Living. ''Ancient Philosophy'' 30.2: 347-381
* Hägg, Tomas. 2012. ''The Art of Biography in Antiquity.'' Cambridge, UK: Cambridge Univ. Press.
* Kindstrand, Jan Frederik. 1986. "Diogenes Laertius and the Chreia Tradition." ''Elenchos'' 7:217–234.
* Long, Anthony A. 2006. "Diogenes Laertius, Life of Arcesilaus." In ''From Epicurus to Epictetus: Studies in Hellenistic and Roman Philosophy.'' Edited by Anthony A. Long, 96–114. Oxford: Oxford Univ. Press.
*
Mansfeld, Jaap. 1986. "Diogenes Laertius on Stoic Philosophy." ''Elenchos'' 7: 295–382.
* Mejer, Jørgen. 1978. ''Diogenes Laertius and his Hellenistic Background.'' Wiesbaden: Steiner.
* Mejer, Jørgen. 1992. "Diogenes Laertius and the Transmission of Greek Philosophy." In ''Aufstieg und Niedergang der römischen Welt: Geschichte und Kultur Roms im Spiegel der neueren Forschung.'' Vol. 2: 36.5–6. Edited by Wolfgang Haase, 3556–3602. Berlin: W. de Gruyter.
* Morgan, Teresa J. 2013. "Encyclopaedias of Virtue?: Collections of Sayings and Stories About Wise Men in Greek." In ''Encyclopaedism from Antiquity to the Renaissance.'' Edited by Jason König and Greg Woolf, 108–128. Cambridge; New York: Cambridge University Press.
* Sassi, Maria Michela. 2011. Ionian Philosophy and Italic Philosophy: From Diogenes Laertius to Diels. In ''The Presocratics from the Latin Middle Ages to Hermann Diels.'' Edited by Oliver Primavesi and Katharina Luchner, 19–44. Stuttgart: Steiner.
* Sollenberger, Michael. 1992. The Lives of the Peripatetics: An Analysis of the Content and Structure of Diogenes Laertius’s “Vitae philosophorum” Book 5. In ''Aufstieg und Niedergang der römischen Welt: Geschichte und Kultur Roms im Spiegel der neueren Forschung.'' Vol. 2: 36.5–6. Edited by Wolfgang Haase, 3793–3879. Berlin: W. de Gruyter.
* Vogt, Katja Maria, ed. 2015. ''Pyrrhonian Skepticism in Diogenes Laertius.'' Tübingen, Germany: Mohr Siebeck.
* Warren, James. 2007. "Diogenes Laertius, Biographer of Philosophy." In Ordering Knowledge in the Roman Empire. Edited by Jason König and Tim Whitmars, 133–149. Cambridge; New York : Cambridge University Press.
Attribution:
*
External links
Works by Diogenes Laertius at Perseus Digital Library*
*
*
*
at the Tertullian Project
*
ttp://hdl.loc.gov/loc.rbc/rosenwald.0251.1 Libro de la vita de philosophi et delle loro elegantissime sentencie.Venice, Joannes Rubeus Vercellensis, 20 May 1489. From th
Rare Book and Special Collections Divisionat the
Library of Congress
The Library of Congress (LOC) is a research library in Washington, D.C., serving as the library and research service for the United States Congress and the ''de facto'' national library of the United States. It also administers Copyright law o ...
Digitized Manuscript of Diogenes Laertius's Vitae Philosophorum(BL
Arundel MS 531) at the
British Library
The British Library is the national library of the United Kingdom. Based in London, it is one of the largest libraries in the world, with an estimated collection of between 170 and 200 million items from multiple countries. As a legal deposit li ...
website
{{Authority control
3rd-century Romans
3rd-century Greek philosophers
Ancient Greek biographers
Year of birth unknown
Year of death unknown
Compilers of works of quotations
Ancient Roman biographers
Epigrammatists of the Greek Anthology
180 births