Imagination is the source of all human achievement.
To be creative you actually have to do something.
Creativity is the process of having original ideas that have value
A three-year-old is not half a six-year-old.
If you're not prepared to be wrong, you're not prepared to be original.
Creativity, as I see it, is the process of putting your imagination to work. It's been defined rather simply as applied imagination. That's not a bad way to think about it.