“Artists have a vested interest in our believing in the flash of revelation, the so-called inspiration… shining down from heavens as a ray of grace. In reality, the imagination of the good artist or thinker produces continuously good, mediocre or bad things, but his judgment, trained and sharpened to a fine point, rejects, selects, connects… All great artists and thinkers are great workers, indefatigable not only in inventing, but also in rejecting, sifting, transforming, ordering.”—Nietzsche, Human, All Too Human: A Book for Free Spirits
From Jonah Lehrer's "Imagine: How Creativity Works."
"A giant inverted steel pyramid is perfectly balanced on its point. Any movement of the pyramid will cause it to topple over. Underneath the pyramid is a $100 bill. How do you remove the bill without disturbing the pyramid?"