Who questions much, shall learn much, and retain much.

Ask counsel of both timesof the ancient time what is best, and of the latter time what is fittest.

We must see whether the same clock with weights will go faster at the top of a mountain or at the bottom of a mine; it is probable, if the pull of the weights decreases on the mountain and increases in the mine, that the earth has real attraction.

A just fear of an imminent danger, though be no blow given, is a lawful cause of war.

People usually think according to their inclinations, speak according to their learning and ingrained opinions, but generally act according to custom.

That things are changed, and that nothing really perishes, and that the sum of matter remains exactly the same, is sufficiently certain.

Gardening is the purest of human pleasures.