Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.

Paper is to write things down that we need to remember. Our brains are used to think.

Thinking is the biggest mistake a dancer could make. You have to feel.

The whole of science is nothing more than a refinement of everyday thinking.

We shall require a substantially new manner of thinking if mankind is to survive.

The world as we have created it is a process of our thinking. It cannot be changed without changing our thinking.