God gave them [the discoveries] to me; how can I sell them to someone else?

Ninety-nine percent of the failures come from people who have the habit of making excuses.

Young people, I want to beg of you always keep your eyes open to what Mother Nature has to teach you. By so doing you will learn many valuable things every day of your life.

Fear of something is at the root of hate for others, and hate within will eventually destroy the hater.

I believe that the great Creator has put ores and oil on this Earth to give us a breathing spell ... as we exhaust them, we must be prepared to fall back on our farms, which are God's true storehouse. We can learn to synthesize materials for every human need from things that grow.

A life that stood out as a gospel of self-forgetting service. He could have added fortune to fame but caring for neither he found happiness and honor in being helpful to the world. The centre of his world was the south where he was born in slavery some 79 years ago and where he did his work as a creative scientist.

Start where you are, with what you have. Make something of it and never be satisfied.