Work before eating, rest after eating. Eat not ravenously, filling the mouth gulp after gulp without breathing space.

Be convinced that, if man were able to reach the end without preparatory studies, such studies would not be preparatory but tiresome and utterly superfluous.

While one man can discover a certain thing by himself, another is never able to understand it, even if taught by means of all possible expressions and metaphors, and during a long period; his mind can in no way grasp it, his capacity is insufficient for it.

Let nothing which can be treated by diet be treated by other means.

He, however, who begins with Metaphysics, will not only become confused in matters of religion, but will fall into complete infidelity.

The whole object of the Prophets and the Sages was to declare that a limit is set to human reason where it must halt.

Inspire me with love for my art and for thy creatures. In the sufferer let me see only the human being.