Between 1424 and 1433 he worked on the translation of the Lives and Opinions of Eminent Philosophers by Diogenes Laërtius, which came to be widely circulated in manuscript form and was published at Rome in 1472 ( the first printed edition of the Lives ; the Greek text was printed only in 1533 ).

** Diogenes Laërtius, Vitae philosophorum ( Lives and Opinions of Eminent Philosophers )

The main source for the life of Heraclitus is Diogenes Laërtius, although some have questioned the validity of his account as " a tissue of Hellenistic anecdotes, most of them obviously fabricated on the basis of statements in the preserved fragments.

Timon of Phlius calls him " the riddler " ( ainiktēs ) according to Diogenes Laërtius, who had just explained that Heraclitus wrote his book " rather unclearly " ( asaphesteron ) so that only the " capable " should attempt it.

Diogenes Laërtius ascribes to Theophrastus the theory that Heraclitus did not complete some of his works because of melancholia.

Diogenes Laërtius divides the physiologoi into two groups, Ionian and Italiote, led by Anaximander and Pythagoras, respectively.

The knowledge we have of them derives from accounts of later philosophical writers ( especially Aristotle, Plutarch, Diogenes Laërtius, Stobaeus and Simplicius ), and some early theologians, ( especially Clement of Alexandria and Hippolytus of Rome ).

Most of the details known about his life come from the anecdotes preserved by Diogenes Laërtius in his Lives and Opinions of Eminent Philosophers.

Diogenes Laërtius has preserved many clever and witty remarks by Zeno, the veracity of which cannot be ascertained.

According to Persaeus ( Diogenes Laërtius vii.

A plausible chronology for his life is as follows: He was born 334 / 3 BC, and came to Athens in 312 / 11 BC at the age of 22 ( Diogenes Laërtius, vii.

He studied philosophy for about 10 years ( Diogenes Laërtius, vii.

Diogenes Laërtius gives two different accounts of his death.

Around 387 BC, at the age of 23, he traveled with the physician Theomedon, who according to Diogenes Laërtius some believed was his lover, to Athens to study with the followers of Socrates.

Diogenes Laërtius, however, wrote that Protagoras invented the “ Socratic ” method.

But most modern scholars, following the suggestion of Diogenes Laërtius, consider them to be forgeries, some forged by the philosopher Heraclides Ponticus, others by or altered by Christian writers:

Diogenes Laërtius preserves several different accounts of this story ; one of them has Crates giving his money away to the citizens of Thebes, apparently after seeing the beggar king Telephus in a tragedy ; whereas another account has him placing his money in the hands of a banker, with the agreement that he should deliver it to his sons, unless they too became philosophers, in which case he should distribute it among the poor.

Crates wrote a book of letters on philosophical subjects, the style of which is compared by Diogenes Laërtius to that of Plato ; but these no longer survive.

* Diogenes Laërtius, Lives and Opinions of Eminent Philosophers, translated by Charles Duke Yonge ( 1853 ) ( Uses a different method of enumerating the sections from the modern editions.

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Diogenes Laërtius says that his works filled ten volumes, but of these, only fragments remain.

Most of the biographical information we have of Theophrastus was provided by Diogenes Laërtius ' Lives of the Philosophers, written more than four hundred years after Theophrastus ' time.

From the lists of Diogenes Laërtius, giving 227 titles, it appears that the activity of Theophrastus extended over the whole field of contemporary knowledge.

A similar belief was attributed by some ancient sources to Diogenes Apolloniates ( late 5th century BCE ), who also linked air with intelligence and soul ( psyche ), but other sources claim that his arche was a substance between air and fire.

He moved to Athens where tradition says he became a pupil of Diogenes of Sinope ; the precise relationship between Crates and Diogenes is uncertain, but there is one apparent reference to Crates referring to himself as " a fellow-citizen of Diogenes, who defied all the plots of envy.

Diogenes Laertius preserves a number of spurious letters between Epimenides and Solon in his Lives of the Philosophers.

It was in Corinth that a meeting between Alexander the Great and Diogenes is supposed to have taken place.

Under one of these emperors, Romanos IV Diogenes ( 1067 – 1071 ), Alexios served with distinction against the Seljuq Turks.

* Diogenes of Sinope ( 412 – 323 BC ), Greek philosopher

* January 1 – Eudocia Macrembolitissa marries the general Romanus Diogenes, who becomes Byzantine Emperor.

* 412 BC – Diogenes of Sinope, philosopher

* Diogenes of Sinope ( 412 – 323 BC ), better known as Diogenes the Cynic or simply Diogenes, philosopher

* Diogenes of Babylon or " Diogenes the Stoic " ( c. 230 – c. 150 BC ), Stoic philosopher from Seleucia, frequently confused with the following

* Diogenes of Byzantium, bishop of Byzantium, 114 – 129 CE

* Romanos IV Diogenes ( died 1072 ), Byzantine emperor 1068 – 1071, son of Constantine Diogenes

While tending his father's sheep, he is said to have fallen asleep for fifty-seven years in a Cretan cave sacred to Zeus, after which he reportedly awoke with the gift of prophecy ( Diogenes Laertius i. 109 – 115 ).

A remarkable statement mentioned by Diogenes Laertius ( c. 250 AD ) is the earliest ( or at least one of the earliest ) references about plausible centenarian longevity given by a scientist, the astronomer Hipparchus of Nicea ( c. 185 – c. 120 BC ), who, according to the doxographer, was assured that the philosopher Democritus of Abdera ( c. 470 / 460 – c. 370 / 360 BC ) lived 109 years.

# " The Modern Adventures of Plato, Diogenes and Freud " ( Kooper ) – 4: 12

# " The Modern Adventures of Plato, Diogenes and Freud " version-mono ( Kooper ) – ( 5: 03 )

# " The Modern Adventures of Plato, Diogenes and Freud " version-mono ( Kooper ) – ( 5: 03 )

Diogenes having nothing to do – of course no one thought of giving him a job – was moved by the sight to gather up his philosopher's cloak and begin rolling his tub energetically up and down the Craneum ; an acquaintance asked for, and got, the explanation: " I do not want to be thought the only idler in such a busy multitude ; I am rolling my tub to be like the rest.

In 1664 he published at London an edition of the Lives of Eminent Philosophers by Diogenes Laertius that contains an unedited anonymous life of Aristotle ; this life was known as ' Vita Menagiana ' before the critical edition by Ingemar Düring, Aristotle in the ancient biographical tradition Stockholm: Almqvist & Wiksell 1957 ; reprinted New York, Garland, 1987, pp. 80 – 93 ) with the title ' Vita Hesychii ' ( the attribution to Hesychius of Miletus is controversial ).

The Stoics, who later took Diogenes ' idea and developed it into a full blown concept, typically stressed that each human being " dwells in two communities – the local community of our birth, and the community of human argument and aspiration ".

Diogenes of Sinope – depicted by Jean-Léon GérômeCynicism (), in its original form, refers to the beliefs of an ancient school of Greek philosophers known as the Cynics (, ).

* Diogenes ( Di ) – A dog from the school, befriended by Paul and adopted by Florence after Paul's death