The right of nature... is the liberty each man hath to use h... - Thomas Hobbes
"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."
More quotes by Thomas Hobbes
"There is no such thing as perpetual tranquillity of mind while we live here; because life itself is but motion, and can never be without desire, nor without fear, no more than without sense."