The good painter must paint two things: a person and the essence of his soul.
Wood feeds the fire which burns it.
Poor is the pupil who does not surpass his master.
If you are alone you belong entirely to yourself. If you are accompanied by even one companion you belong only half to yourself or even less in proportion to the thoughtlessness of his conduct and if you have more than one companion you will fall more deeply into the same plight.
Nature never breaks her own laws.
There is nothing which deceives us as much as our own judgement.
Beauty perishes in life, but is immortal in art.
In rivers, the water that you touch is the last of what has passed and the first of that which comes; so with present time.
He who walks straight rarely falls.
It is ill to praise, and worse to blame, the thing which you do not understand.
The greatest geniuses sometimes accomplish more when they work less.
Obstacles cannot crush me. Every obstacle yields to stern resolve. He who is fixed to a star does not change his mind.
I awoke, only to see that the rest of the world is still asleep.
There is no result in nature without a cause; understand the cause and you will have no need of the experiment.
Details make perfection, and perfection is not a detail.
You must grow in patience when you meet with great wrongs, and they will then be powerless to vex your mind.
The worst evil which can befall the artist is that his work should appear good in his own eyes.
Not to punish evil is equivalent to authorizing it.
If on your own or by the criticism of others you discover error in your work, correct it then and there; otherwise in exposing your work to the public, you will expose your error also.
Be a mirror, absorb everything around you and still remain the same.