The virtue of prosperity is temperance; the virtue of adversity is fortitude.

...those experiments be not only esteemed which have an immediate and present use, but those principally which are of most universal consequence for invention of other experiments, and those which give more light to the invention of causes; for the invention of the mariner's needle, which giveth the direction, is of no less benefit for navigation than the invention of the sails, which give the motion.

There is no secrecy comparable to celerity.

The master of superstition, is the people; and in all superstition, wise men follow fools; and arguments are fitted to practice, in a reversed order.

Suspicions that the mind, of itself, gathers, are but buzzes; but suspicions that are artificially nourished and put into men's heads by the tales and whisperings of others, have stings.

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.

Nothing is to be feared but fear.