Instrumental or mechanical science is the noblest and above all others, the most useful.

The vine that has grown old on an old tree falls with the ruin of that tree, and through that bad companionship must perish with it.

Truly man is the king of beasts, for his brutality exceeds them. We live by the death of others. We are burial places.

Vows begin when hope dies.

It vexes me greatly that having to earn my living has forced me to interrupt the work and to attend to small matters.

Motion is created by the destruction of balance.

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.