Observation, reason, and experiment make up what we call the scientific method.

I have the advantage of having found out how hard it is to get to really know something. How careful you have to be about checking your experiments. How easy it is to make mistakes and fool yourself. I know what it means to know something.

It is important to realize that in physics today, we have no knowledge of what energy is

The work I have done has, already, been adequately rewarded and recognized. Imagination reaches out repeatedly trying to achieve some higher level of understanding, until suddenly I find myself momentarily alone before one new corner of nature's pattern of beauty and true majesty revealed. That was my reward.

I couldn't claim that I was smarter than sixty-five other guys--but the average of sixty-five other guys, certainly!

It is our responsibility to leave the people of the future a free hand.

Science is the belief in the ignorance of experts.