"It is not what we have, but what we enjoy, that constitutes our abundance."

"It is impossible for someone to dispel his fears about the most important matters if he does not understand the nature of the universe but still gives some credence to myths. So that without the study…"

"Live unknown."

"The wise man, when he is in danger, laughs at the danger."

"Empty is the argument of the philosopher by which no human suffering is therapeutically treated."