Isocrates in his ninety-fourth year wrote a most noble work.

Sophocles did the same when nearly a hundred years old.

Simonides wrote poems in his eightieth year.

Aulus Gellius did not desire to live longer than he should be able to write, as he says himself in the prologue to the Noctes Atticae.
The fervour of study which possessed Euclid the Socratic, Taurus the philosopher used to relate to incite young men to study, as Gellius tells in the book we have mentioned.

For the Athenians, hating the people of Megara, decreed that if any of the Megarensians entered Athens, he should be put to death.