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There are no new ideas. There are only new ways of making them felt.

All ideas grow out of other ideas.

I actually don't have a great surplus of ideas. Some evolve very slowly, over many years, but I sort of trust that all of the interesting ones will become something that I eventually end up doing.

We don't need a new idea; the idea is called America, and it still works.

Ideas won't keep; something must be done about them.

I have too many ideas for a lifetime.

I think sometimes people need to get used to an idea.

I begin with an idea and then it becomes something else.

A real idea keeps changing and appears in many places.