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Imagination is the Discovering Faculty, pre-eminently. It is that which penetrates into the unseen worlds around us, the worlds of Science.

True intelligence requires fabulous imagination.

All the breaks you need in life wait within your imagination, Imagination is the workshop of your mind, capable of turning mind energy into accomplishment and wealth.

The true sign of intelligence is not knowledge but imagination.

Imagination tends to be truly useful if accompanied by the power of mental control - if the worlds in one's head can be purposefully manipulated and distinguished from the real one outside it.

Imagination creates reality.

There is nothing that human imagination can figure brilliant and enviable that human genius and skill do not aspire to realize.

I don't think there is such a thing as pure imagination. I think it's a combination of memory and invention.