Thomas Hobbes

Leisure is the Mother of Philosophy.

Curiosity is the lust of the mind.

Understanding is nothing else than conception caused by speech.

The flesh endures the storms of the present alone; the mind, those of the past and future as well as the present. Gluttony is a lust of the mind.

The praise of ancient authors proceeds not from the reverence of the dead, but from the competition and mutual envy of the living.

Words are the money of fools.

The obligation of subjects to the sovereign is understood to last as long, and no longer, than the power lasteth by which he is able to protect them.

Sudden glory is the passion which maketh those grimaces called laughter.

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.

A man cannot lay down the right of resisting them that assault him by force, to take away his life.

Prudence is but experience, which equal time, equally bestows on all men, in those things they equally apply themselves unto.

The privilege of absurdity; to which no living creature is subject, but man only.