"We must not violate nature, but obey her."

"Against all things it is possible to find security, but with regard to death we all dwell in an unfortified city."

"The man who is most blessed is he who has the fewest wants."

"The wise man will not be miserable when he is old."

"Empty is the argument of the philosopher by which no human suffering is therapeutically treated. For just as there is no profit in medicine if it does not expel the diseases of the body, so there is n…"