To invent, you need a good imagination and a pile of junk.

I took the vow of celibacy in 1906. I had not shared my thoughts with my wife until then, but only consulted her at the time of making the vow. She had no objection. 

Truth is the greatest casualty of compromised media.

Obstacles are those frightful things you see when you take your eyes off your goal. 

Too much self-centered attitude, you see, brings, you see, isolation. Result: loneliness, fear, anger. The extreme self-centered attitude is the source of suffering.

I realized quickly what Mandela and Tambo meant to ordinary Africans. It was a place where they could come and find a sympathetic ear and a competent ally, a place where they would not be either turned away or cheated, a place where they might actually feel proud to be represented by men of their own skin color.

External nature is only internal nature writ large.

Great ideas originate in the muscles.

Eating words has never given me indigestion. 

This revolution, the information revoultion, is a revolution of free energy as well, but of another kind: free intellectual energy. It's very crude today, yet our Macintosh computer takes less power than a 100-watt bulb to run it and it can save you hours a day. What will it be able to do ten or 20 years from now, or 50 years from now?

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. 

Freedom is never dear at any price. It is the breath of life. What would a man not pay for living?