"It is a common saying, and in everybody's mouth, that life is but a sojourn. The learning and knowledge that we have, is, at the most, but little compared with that of which we are ignorant."

"The desire for sex turns the penis into a disobedient thing with a mind of its own. Like an animal that will not listen .it tries to take complete control."

"The wisest have the most authority."

"Lack of activity destroys the good condition of every human being."

"Rhetoric is the art of ruling the minds of men."

"Appearance tyrannizes over truth."

"Yet even in reaching for the beautiful there is beauty, and also in suffering whatever it is that one suffers en route."

"Life is a short exile."

"I have a theory that you can make any sentence seem profound by writing the name of a dead philosopher at the end of it."

"Those who have a natural talent for calculation are generally quick-witted at every other kind of knowledge; and even the dull, if they have had an arithmetical training, although they may derive no other advantage from it, always become much quicker than they would have been."