The opinion formulated by the Church has more value in my eyes than human reasons, whatever they may be.

To know nothing is the happiest life.

If you look at history you'll find that no state has been so plagued by its rulers as when power has fallen into the hands of some dabbler in philosophy or literary addict.

I doubt if a single individual could be found from the whole of mankind free from some form of insanity. The only difference is one of degree. A man who sees a gourd and takes it for his wife is called insane because this happens to very few people.

The more ignorant, reckless and thoughtless a doctor is, the higher his reputation soars even amongst powerful princes.

Out of all those centuries the Greeks can count seven sages at the most, and if anyone looks at them more closely I swear he'll not find so much as a half-wise man or even a third of a wise man among them.

Read first the best books. The important thing for you is not how much you know, but the quality of what you know.