You can't use tact with a Congressman! A Congressman is a hog! You must take a stick and hit him on the snout!

There are two things that seem to be at the bottom of our constitutions; one is a continual tendency towards politics; the other is family pride; and it is strange how these two feelings run through all of us.

As for America, it is the ideal fruit of all your youthful hopes and reforms. Everybody is fairly decent, respectable, domestic, bourgeois, middle-class, and tiresome. There is absolutely nothing to revile except that it's a bore.

The difference is slight, to the influence of an author, whether he is read by five hundred readers, or by five hundred thousand; if he can select the five hundred, he reaches the five hundred thousand.

Friends are born, not made.

I firmly believe, that before many centuries more, science will be the master of man. The engines he will have invented will be beyond his strength to control. Someday, science shall have the existence of mankind in its power, and the human race commit suicide by blowing up the world.

Mathematicians practice absolute freedom.