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

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

Every now and then go away, have a little relaxation, for when you come back to your work your judgment will be surer. Go some distance away because then the work appears smaller and more of it can be taken in at a glance and a lack of harmony and proportion is more readily seen.

Experience does not err. Only your judgments err by expecting from her what is not in her power.

Common Sense is that which judges the things given to it by other senses.

As every divided kingdom falls, so every mind divided between many studies confounds and saps itself.

Iron rusts from disuse, stagnant water loses its purity and in cold weather becomes frozen; even so does inaction sap the vigors of the mind.

As a well-spent day brings happy sleep, so a life well spent brings happy death.

While I thought that I was learning how to live, I have been learning how to die.

Just as iron rusts from disuse, even so does inaction spoil the intellect.