I should have been, I don't know, a con-man, a robber or a prostitute. But it was vanity that made me choose painting, vanity and chance.

Science is but an image of the truth.

Who ever is out of patience is out of possession of their soul.

He that will not apply new remedies must expect new evils; for time is the greatest innovator.

We read that we ought to forgive our enemies; but we do not read that we ought to forgive our friends.

...neither is it possible to discover the more remote and deeper parts of any science, if you stand but upon the level of the same science, and ascend not to a higher science.

Half of science is putting forth the right questions.