An Athenian, a Socratic philosopher from [among] the orators, who was first called a Peripatetic, then became a Cynic; he was the son of a father who had the same name, but a mother who was Thracian by race. This man wrote ten volumes altogether: the first [was] on magic;[1] it told the story of a certain mage Zoroaster, who discovered wisdom; but some have attributed this to Aristotle, others to Rhodon.[2] So this man also began the philosophy of Cynicism,[3] which was so called because he taught in the Cynosarges gymnasium. And he became the mentor of Diogenes the Cynic and the rest.
When Antisthenes was suffering from a long and intractable illness Diogenes gave him a dagger, saying, "If you should require a friend's services." Thus that man thought of death as nothing painful, such that illness became altogether a luxury.[4]
[Altogether] meaning totally.[5]