"The right of nature... is the liberty each man hath, to use his own power, as he will himself, for the preservation of his own nature; that is to say, of his own life."

"For 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 wise as themselves."

"Covenants, without the sword, are but words, and of no strength to secure a man at all."

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

"For every man is desirous of what is good for himself, and shuns what is evil for himself; but there is no man so good, but that he is ready to take what he can get, and to hold what he hath."