Women when they marry buy a cat in the bag.

Ceremony forbids us to express by words things that are lawful and natural, and we obey it; reason forbids us to do things unlawful and ill, and nobody obeys it.

It is not a mind, it is not a body that we educate, but it is a man, and we must not make two parts of him.

It needs good management to enjoy life. I enjoy it twice as much as others, for the measure of enjoyment depends on the greater or less attention that we give to it...The shorter my possession of life the deeper and fuller I must make it.

He that I am reading seems always to have the most force.

There is no desire more natural than the desire of knowledge. (Il n'est desir plus naturel que le desir de connaissance)

Oh, a friend! How true is that old saying, that the enjoyment of one is sweeter and more necessary than that of the elements of water and fire!