I wonder why. I wonder why. I wonder why I wonder.

We scientists are clever — too clever — are you not satisfied? Is four square miles in one bomb not enough? Men are still thinking. Just tell us how big you want it!

Experiment is the sole judge of the validity of any idea.

If science is to progress, what we need is the ability to experiment, honesty in reporting results—the results must be reported without somebody saying what they would like the results to have been—and finally—an important thing—the intelligence to interpret the results.

Another of the qualities of science is that it teaches the value of rational thought, as well as the importance of freedom of thought; the positive results that come from doubting that all the lessons are true... Learn from science that you must doubt the experts. As a matter of fact, I can also define science another way: Science is the belief in the ignorance of experts.

If an apple was magnified to the size of the Earth, then the atoms in the apple would be approximately the size of the original apple.

The problem of creating something new, but which is consistent with everything which has been seen before, is one of extreme difficulty.