A healthful hunger for a great idea is the beauty and blessedness of life.

A healthful hunger for a great idea is the beauty and blessedness of life.

The most powerful factors in the world are clear ideas in the minds of energetic men of good will.

The most powerful factors in the world are clear ideas in the minds of energetic men of good will.

When ideas fail, words come in very handy.

When ideas fail, words come in very handy.

If at first the idea is absurd, then there is no hope for it.

If at first the idea is absurd, then there is no hope for it.

Good ideas are common - what's uncommon are people who'll work hard enough to bring them about

Good ideas are common - what's uncommon are people who'll work hard enough to bring them about

A person with a new idea is a crank until the idea succeeds.

A person with a new idea is a crank until the idea succeeds.

To have a great idea, have a lot of them.

To have a great idea, have a lot of them.

I can't understand why people are frightened of new ideas. I'm frightened of the old ones.

I can't understand why people are frightened of new ideas. I'm frightened of the old ones.

An invasion of armies can be resisted, but not an idea whose time has come.

An invasion of armies can be resisted, but not an idea whose time has come.