Secrecy, once accepted, becomes an addiction.

Life improves slowly and goes wrong fast, and only catastrophe is clearly visible.

I claim that relativity and the rest of modern physics is not complicated. It can be explained very simply. It is only unusual or, put another way, it is contrary to common sense.

If not for me, the H-bomb would have been developed in Russia first. In the U.S., we'd now be speaking Russian.

I am guilty of the great crime of optimism.

My experience has been in a short 77 years that in the end when you fight for a desperate cause and have good reasons to fight, you usually win.

Today, nothing is unusual about a scientific discovery's being followed soon after by a technical application: The discovery of electrons led to electronics; fission led to nuclear energy. But before the 1880's, science played almost no role in the advances of technology. For example, James Watt developed the first efficient steam engine long before science established the equivalence between mechanical heat and energy.