You must consider, when reading this treatise, that mental perception, because connected with matter, is subject to conditions similar to those to which physical perception is subject.

It is well known among physicians that the best of the nourishing foods is the one that the Moslem religion forbids, i.e., Wine. It contains much good and light nourishment. It is rapidly digested and helps to digest other foods.

Every man whose character traits all lie in the mean is called a wise man.

Astrology is a disease, not a science... It is a tree under the shadow of which all sorts of superstitions thrive. ... Only fools and charlatans lend value to it.

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.

In finances, be strict with yourself, generous with others.

Give a man a fish and you feed him for a day; teach a man to fish and you feed him for a lifetime.