Anybody who really wants to abolish war must resolutely declare himself in favor of his own country's resigning a portion of sovereignty in place of international institutions.

As I look back over the truly crucial events in my life I realize that they were not planned long in advance. Albert Einstein said, 'There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is.'

Time does not exist - we invented it

The trouble with the younger generation is that they don't stay young for very long.

I didn't arrive at my understanding of the fundamental laws of the universe through my rational mind.

Classical thermodynamics ... is the only physical theory of universal content which I am convinced ... will never be overthrown.

The future is an unknown, but a somewhat predictable unknown. To look to the future we must first look back upon the past. That is where the seeds of the future were planted. I never think of the future. It comes soon enough.