An autobiography usually reveals nothing bad about its writer except his memory.

There will be sleeping enough in the grave.

If anyone should doubt whether the electrical matter passes through the substance of bodies, or only over along their surfaces, a shock from an electrified large glass jar, taken through his own body, will probably convince him.

If you want a thing done - go. If not - send.

No nation has ever been ruined by trade.

The rapid progress of the sciences makes me sorry, at times, that I was born so soon. Imagine the power that man will have over matter, a few hundred years from now. We may learn how to remove gravity from large masses, and float them over great distances. Agriculture will double its produce with less labor. All diseases will surely be cured... even old age. If only the moral sciences could be improved as well. Perhaps men would cease to be wolves to one another... and human beings could learn to be human.

The best way to help the poor is to make them uncomfortable in their own poverty.