Looking back at the worst times, it always seems that they were times in which there were people who believed with absolute faith and absolute dogmatism in something. And they were so serious in this matter that they insisted that the rest of the world agree with them. And then they would do things that were directly inconsistent with their own beliefs in order to maintain that what they said was true.

Physics is like sex: sure, it may give some practical results, but that's not why we do it.

You can’t say A is made of B or vice versa. All mass is interaction.

All theoretical chemistry is really physics; and all theoretical chemists know it.

Science alone of all the subjects contains within itself the lesson of the danger of belief in the infallibility of the greatest teachers of the preceding generation.

This is not very important what I'm doing. I'm just proving something.

While I am describing to you how Nature works, you won't understand why Nature works that way. But you see, nobody understands that.