The good painter must paint two things: a person and the essence of his soul.

I am still hopeful. A falcon, Time. But the coincidence is probably accidental.

He who does not understand the supreme certainty of mathematics is wallowing in confusion.

He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.

People of higher talent work, even if they seem to do nothing

A single and distinct luminous body causes stronger relief in the objects than a diffused light; as may be seen by comparing one side of a landscape illuminated by the sun, and one overshadowed by clouds, and illuminated only by the diffused light of the atmosphere.

Fear arises sooner than anything else.