He who never puts his trust in any man will never be deceived.

Affective gestures pointing to things near either in time or space should be made with the hand not very far from the body of the person pointing; and if these things are distant, the hand of the painter should be more extended and the face turned toward the person to whom he is addressing the demonstration.

Sculptured figures which appear in motion, will, in their standing position, actually look as if they were falling forward.

He who thinks little errs much.

All our knowledge hast its origins in our perceptions … In nature there is no effect without a cause … Experience never errs; it is only your judgments that err by promising themselves effects such as are not caused by your experiments … Science is the observation of things possible, whether present or past; prescience is the knowledge of things which may come to pass.

To be a winner you must want to win but must know of the chance of losing and must not fear of it.

The function of muscle is to pull and not to push, except in the case of the genitals and the tongue.