When you draw a nude, sketch the whole figure and nicely fit the members to it and to each other. Even though you may only finish one portion of the drawing, just make certain that all the parts hang together, so that the study will be useful to you in the future.

Whoever in debate quotes authority uses not intellect, but memory.

The painter has the Universe in his mind and hands.

First study the science, and then practice the art which is born of that science.

In the days of thy youth seek to obtain that which shall compensate the losses of thy old age.

He who fears dangers will not perish by them.

He who truly knows has no occasion to shout.