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.

As we benefit from the inventions of others, we should be glad to share our own ... freely and gladly.

I was surprised to find myself so much fuller of Faults than I had imagined, but I had the Satisfaction of seeing them diminish.

When religion is good, it will take care of itself. When it is not able to take care of itself, and God does not see fit to take care of it, so that it has to appeal to the civil power for support, it is evidence to my mind that its cause is a bad one.

Many complain of their memory, few of their judgment.

When men differ in opinion, both sides ought equally to have the advantage of being heard by the public; when Truth and Error have fair play, the former is always an overmatch for the latter.

Revealed religion has no weight with me.