If you want to change the future, you must change what you're doing in the present.

I hope all of us may eventually be together in everlasting peace and bliss -- except the inventor of the #‎ telephone .

There is something fascinating about science. One gets such wholesale returns of conjecture out of such a trifling investment of fact.

Hain't we got all the fools in town on our side? And hain't that a big enough majority in any town?

If we could imagine such a man, that is a man who could invent the fly and send him out on his mission and furnish him with his orders: Depart into the uttermost corners of the earth and, diligently do your appointed work. Persecute the sick child, settle upon its eyes, its face, its hands, and gnaw and pester and sting, worry and fret and madden the worn and tried mother who watches by the child and humbly prays for mercy and relief with the pathetic faith of the deceived and the unteachable.

I have been born more times than anybody except Krishna.

I don't know of a single foreign product that enters this country untaxed, except the answer to prayer.