Intrinsic motivation vs. Extrinsic stimulus

Great talk by Dan Pink at TED about pitfalls of extrinsic stimulus and scientific evidence for intrinsic motivation:

I kind of always felt that way, but now I've got evidence to refer to. Plutarch was right that

The mind is not a vessel to be filled but a fire to be kindled.

You can not stimulate creativity, you can only create environment for it to blossom.