The greatest deception men suffer is from their own opinions.

The men of experiment are like the ant; they only collect and use. But the bee . . . gathers its materials from the flowers of the garden and of the field, but transforms and digests it by a power of its own.

The natural desire of good men is knowledge.

A good painter is to paint two main things, men and the working of man's mind.

Nature never breaks her own laws.

Men of lofty genius when they are doing the least work are most active.