No arts, no letters - no society.

The disembodied spirit is immortal; there is nothing of it that can grow old or die. But the embodied spirit sees death on the horizon as soon as its day dawns.

Force and fraud are in war the two cardinal virtues.

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

If men are naturally in a state of war, why do they always carry arms and why do they have keys to lock their doors?

Geometry is the only science that it hath pleased God hitherto to bestow on mankind.

Curiosity draws a man from consideration of the effect, to seek the cause.