I invented nothing new, I simply assembled the discoveries of other men behind whom there was centuries of work.

If governments would only understand that if people are left alone they'll work out their own salvation.

The fuel of the future is going to come from fruit like that sumach out by the road, or from apples, weeds, sawdust - almost anything.

Disappointment is just the chance to start once more, this time all the more insightfully.

Every object tells a story if you know how to read it.

The object of education is not to fill a man's mind with facts; it is to teach him how to use his mind in thinking.

Whether you think you will succeed or not, you are right.