Do not copy nature too much. Art is an abstraction.

One's state of mind is three-quarters of what counts, so it has to be carefully nurtured if you want to do something great and lasting.

Stressing output is the key to improving productivity, while looking to increase activity can result in just the opposite.

The single most powerful tool for winning a negotiation is the ability to get up and walk away from the table without a deal

How do you see those tree?... They are yellow. Well then put down yellow. And that shadow is rather blue. So render it with pure ultramarine. Those red leaves? Use vermillion.

Machines have come, art has fled, and I am far from thinking photography can help us.

Civilization is what makes you sick.