If a man's wit be wandering, let him study the mathematics.

Therefore if a man look sharply and attentively, he shall see Fortune; for though she be blind, yet she is not invisible.

It cannot be that axioms established by argumentation should avail for the discovery of new works, since the subtlety of nature is greater many times over than the subtlety of argument. But axioms duly and orderly formed from particulars easily discover the way to new particulars, and thus render sciences active.

Parents who wish to train up their children in the way they should go must go in the way in which they would have their children go.

They are the best physicians, who being great in learning most incline to the traditions of experience, or being distinguished in practice do not reflect the methods and generalities of art.

The fortune which nobody sees makes a person happy and unenvied.

Riches are for spending, and spending for honor and good actions; therefore extraordinary expense must be limited by the worth of the occasion.