If money be not thy servant, it will be thy master.

The general root of superstition is that men observe when things hit, and not when they miss, and commit to memory the one, and pass over the other.

The joys of parents are secret, and so are their grieves and fears.

The worst solitude is to have no real friendships.

A prudent question is one-half of wisdom.

I regret not starting to paint earlier...It is one of the few things I do regret.

There are and can be only two ways of searching into and discovering truth. The one flies from the senses and particulars to the most general axioms, and from these principles, the truth of which it takes for settled and immovable, proceeds to judgment and to the discovery of middle axioms. And this way is now in fashion. The other derives axioms from the senses and particulars, rising by a gradual and unbroken ascent, so that it arrives at the most general axioms last of all. This is the true way, but as yet untried.