Imagination without knowledge may create beautiful things, knowledge without imagination can create only perfect ones.

When we first got married, we made a pact. It was this: In our life together, it was decided I would make all of the big decisions and my wife would make all of the little decisions. For fifty years, we have held true to that agreement. I believe that is the reason for the success in our marriage. However, the strange thing is that in fifty years, there hasn’t been one big decision.

Intelligence and genius

I want to know all God's thoughts.

We must begin to inculcate our children against militarism by educating them in the spirit of pacifism. Our schoolbooks glorify war and conceal it's horror. I would teach peace rather than war.

Whether or not you can observe a thing depends upon the theory you use. It is the theory which decides what can be observed.

There two things that are infinite, human stupidity and the universe, I don't know about the universe