Doctors put drugs of which they know little into bodies of which they know less for diseases of which they know nothing at all.

Perfection is attained by slow degrees; it requires the hand of time.

The true triumph of reason is that it enables us to get along with those who do not possess it.

When truth is evident, it is impossible for parties and factions to rise. There never has been a dispute as to whether there is daylight at noon.

It is not enough to be exceptionally mad, licentious and fanatical in order to win a great reputation; it is still necessary to arrive on the scene at the right time.

The more a man knows, the less he talks.

Love truth, and pardon error.