"Happiness is the meaning and the purpose of life, the whole aim and end of human existence."

"The educated differ from the uneducated as much as the living from the dead."

"To perceive is to suffer."

"It is unbecoming for young men to utter maxims."

"The slave has no deliberative faculty at all; the woman has, but it is without authority, and the child has, but it is immature."