Ideas

Torch every book, burn every page, char every word to ash. Ideas are incombustible and therein lies your real fear.
— Ellen Hopkins

A war of ideas can no more be won without books than a naval war can be won without ships. Books, like ships, have the toughest armor, the longest cruising range, and mount the most powerful guns.
— Franklin D. Roosevelt

If you have an apple and I have an apple and we exchange these apples then you and I will still each have one apple. But if you have an idea and I have an idea and we exchange these ideas, then each of us will have two ideas.
— George Bernard Shaw

The best test of truth is the power of the thought to get itself accepted in the competition of the market.
— Oliver Wendell Holmes Jr.

Man’s mind, stretched to a new idea, never goes back to its original dimension.
— Oliver Wendell Holmes Sr.