Friendship is the heaven of life.

After we had conducted thousands of experiments on a certain project without solving the problem, one of my associates, after we had conducted the crowning experiment and it had proved a failure, expressed discouragement and disgust over our having failed to find out anything. I cheerily assured him that we had learned something. For we had learned for a certainty that the thing couldnt be done that way, and that we would have to try some other way.

I am much less interested in what is called God's word than in God's deeds. All bibles are man-made.

Sticking to it is the genius.

If we did all the things we are capable of doing, we would literally astound ourselves.

I am long on ideas, but short on time. I expect to live to be only about a hundred.

The entity that gives life and motion to the human body is finer still and lies infinitely beyond the reach of our finest scientific instruments. When this entity deserts the body, the body is like a ship without a rudder - deserted, motionless, dead.