The only things worth learning are the things you learn after you know it all.

Without a strong educational system — free of government control — democracy is crippled. Knowledge is not only the key to power. It is the citadel of human freedom.

If you can't convince them [with your logic] then just confound them [with your wit.]

If we do not want to die together in war, we must learn to live together in peace.

In this shrinking world, it is futile to seek safety behind geographical barriers. Real security will be found only in law and in justice.

Of course, there are dangers in religious freedom and freedom of opinion. But to deny these rights is worse than dangerous, it is absolutely fatal to liberty.

Being a president is like riding a tiger. A man has to keep on riding or he is swallowed.