Your ability to face setbacks and disappointments without giving up will be the measure of your ability to succeed.

Civilization and profit go hand in hand.

We demand entire freedom of action and then expect the government in some miraculous way to save us from the consequences of our own acts.... Self-government means self-reliance.

We live an age of science and of abounding accumulation of material things. These did not create the Declaration. Our Declaration created them. ... If we are to maintain the great heritage which has been bequeathed to us, we must be like-minded as the fathers who created it.

Surprisingly few men are lacking in capacity, but they fail because... they are too indolent to apply themselves with the seriousness and the attention that is necessary to solve important problems.

The most common commodity in this country is unrealized potential.

Whenever I indulge my sense of humor, it gets me into trouble.