The business conduct of the disciples of wise men is truthful and faithful.... He does not allow himself to be made a surety or a guarantor and does not accept the power of attorney.... He lends money and is gracious. He shall not take away business from his fellow man.

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.

Astrology is not an art, it is a disease.

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

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

The risk of a wrong decision is preferable to the terror of indecision.

One should see the world, and see himself as a scale with an equal balance of good and evil. When he does one good deed the scale is tipped to the good - he and the world is saved. When he does one evil deed the scale is tipped to the bad - he and the world is destroyed.