A good painter has two main objects to paint, man and the intention of his soul.

The worst evil which can befall the artist is that his work should appear good in his own eyes.

The organ of perception acts more readily than judgment.

Instrumental or mechanical science is the noblest and above all others, the most useful.

O Time! consumer of all things; O envious age! thou dost destroy all things and devour all things with the relentless teeth of years, little by little in a slow death. Helen, when she looked in her mirror, seeing the withered wrinkles made in her face by old age, wept and wondered why she had twice been carried away.

When you are alone you are all your own.

You must grow in patience when you meet with great wrongs, and they will then be powerless to vex your mind.