Those who are inspired by a model other than Nature, labor in vain.
The wisest and noblest teacher is nature itself.
The motions of men must be such as suggest their dignity or their baseness.
Painting is poetry that is seen rather than felt, and poetry is painting that is felt rather than seen.
A day will come in which men will look upon an animal's murder the same way they look today upon a man's murder.
Where the spirit does not work with the hand, there is no art.