Poor is the pupil who does not surpass his master.

How painting surpasses all human works by reason of the subtle possibilities which it contains.

The part always has a tendency to reunite with its whole in order to escape from its imperfection.

Time stays long enough for anyone who will use it.

The eye is the window of the human body through which it feels its way and enjoys the beauty of the world.

He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.

The knowledge of all things is possible