They do not think, therefore they are not.

I am confident of my ability to demonstrate that one can sometimes believe in something and yet not believe in it. Nothing is less fathomable than the systems that motivate our actions.

It is in the gift for employing all the vicissitudes of life to one's own advantage and to that of one's craft that a large part of genius consists.

Probably no invention came more easily to man than heaven.

Why does a suppurating lung give so little warning and a sore on the finger so much?

The greater part of human misery is caused by indolence.

There are people who think that everything one does with a serious face is sensible.