The strength of a country is the strength of its religious convictions.

Some of the offers that have come to me would never have come if I had not been President. That means these people are trying to hire not Calvin Coolidge, but a former President of the United States. I can't make that kind of use of the office.... I can't do anything that might take away from the Presidency any of its dignity, or any of the faith people have in it.

Nordics deteriorate when mixed with other races.

Nothing in the world can take the place of persistence.

You can display no greater wisdom than by resisting proposals for needless legislation. It is much more important to kill bad bills than to pass good ones.

It is all the more necessary under a system of free government that the people should be enlightened, that they should be correctly informed, than it is under an absolute government that they should be ignorant. Under a republic the institutions of learning, while bound by the constitution and laws, are in no way subservient to the government.

[The reason a man has] so much trouble with the Senate is that there isn't a man in the Senate who doesn't think he is better suited to be President than the President, and thinks he might have been President except for luck.