Forcing yourself to use restricted means is the sort of restraint that liberates invention. It obliges you to make a kind of progress that you can't even imagine in advance.
Pablo PicassoI love bats! Women are scared of them. They think bats can get caught in their hair, don't they? But bats are the most beautiful of animals, extraordinarily delicate. Have you observed their brilliant little eyes, gleaming with intelligence, and their skin, silky as velvet? And look at all these delicate little bones.
Pablo Picasso