The significant problems we have cannot be solved at the same level of thinking with which we created them.

All means prove but blunt instruments, if they have not behind them a living spirit.

Nationalism is an infantile disease. It is the measles of mankind.

Creativity is contagious. Pass it on.

I have survived two wars, two wives and Hitler.

I refuse to make money out of my science. My laurel is not for sale like so many bales of cotton.

Our lives will be measured by what we do for others