Calvin Coolidge

I have never been hurt by what I have not said.

Knowledge comes, but wisdom lingers. It may not be difficult to store up in the mind a vast quantity of facts within a comparatively short time, but the ability to form judgments requires the severe discipline of hard work and the tempering heat of experience and maturity.

The business of America is business.

Perhaps one of the most important accomplishments of my administration has been minding my own business.

After all, the chief business of the American people is business. They are profoundly concerned with producing, buying, selling, investing and prospering in the world.

I have found it advisable not to give too much heed to what people say when I am trying to accomplish something of consequence. Invariably they proclaim it can't be done. I deem that the very best time to make the effort.

No enterprise can exist for itself alone. It ministers to some great need, it performs some great service, not for itself, but for others or failing therein, it ceases to be profitable and ceases to exist.

Nothing in this world can take the place of persistence. Talent will not nothing is more common than unsuccessful people with talent. Genius will not unrewarded genius is almost a proverb. Education will not the world is full of educated failures. Persistence and determination alone are omnipotent.