Never can custom conquer nature, for she is ever unconquered.

The most evident difference between man and animals is this: the beast, in as much as it is largely motivated by the senses and with little perception of the past or future, lives only for the present. But man, because he is endowed with reason by which he is able to perceive relationships, sees the causes of things, understands the reciprocal nature of cause and effect, makes analogies, easily surveys the whole course of his life, and makes the necessary preparations for its conduct.

Let every man practise the trade which he best understands.

As I give thought to the matter, I find four causes for the apparent misery of old age; first, it withdraws us from active accomplishments; second, it renders the body less powerful; third, it deprives us of almost all forms of enjoyment; fourth, it stands not far from death.

Politicians are not born; they are excreted.

I like myself, but I won't say I'm as handsome as the bull that kidnapped Europa.

It is our own evil thoughts which madden us.