Appetite, with an opinion of attaining, is called hope; the same, without such opinion, despair.

Force and fraud are in war the two cardinal virtues.

Give an inch, he'll take an ell.

Leisure is the mother of philosophy.

No mans error becomes his own Law; nor obliges him to persist in it.

Now I am about to take my last voyage, a great leap in the dark.

Science is the knowledge of consequences, and dependence of one fact upon another.

Setting themselves against reason, as often as reason is against them.

Such is the nature of men, that howsoever they may acknowledge many others to be more witty, or more eloquent, or more learned; yet they will hardly believe there be many so wis ...

The "value" or "worth" of a man is, as of all other things, his price; that is to say, so much as would be given for the use of his power.