The Pragmatic Craftsman :: Simplicity from complexity ::

A creative person does things that have never been done before. Intelligence is the ability to learn and the ability to think. Personality traits is what distinguishes creative from non-creative people. Personality traits associated with creativity: diligent, stubborn, eccentric, reclusive, not religious, enjoys work.

These are just a few points taken from Creativity in Science and Engineering paper by Ronald B. Standler. If you want to find out more about creativity, you should read it. It’s definitely worth your time.