Even people who aren't geniuses can outthink the rest of mankind if they develop certain thinking habits.

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

He who joyfully marches to music in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would suffice.

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

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

Thinking is the hardest work there is, which is probably the reason so few engage in it.