Ideas are born, they struggle, triumph, change, and they are transformed; but is there a dead idea which in the end does not live on, transformed into a broader and clearer goal?

Don't worry about people stealing your ideas. If your ideas are any good, you'll have to ram them down people's throats.

Nothing is more dangerous than an idea, when you have only one idea.

No army can withstand the strength of an idea whose time has come.

You can kill a man but you can't kill an idea.

You can kill a man, but you can't kill an idea.

Nothing is more dangerous than an idea, when it is the only idea we have.

Every man with an idea has at least two or three followers.

Defeat is a fact and victory can be a fact. If the idea is good, it will survive defeat, it may even survive the victory.

The only sure weapon against bad ideas is better ideas.