Our freedom to doubt was born out of a struggle against authority in the early days of science. It was a very deep and strong struggle: permit us to question - to doubt - to not be sure. I think that it is important that we do not forget this struggle and thus perhaps lose what we have gained.

It is surprising that people do not believe that there is imagination in science. It is a very interesting kind of imagination, unlike that of the artist. The great difficulty is in trying to imagine something that you have never seen, that is consistent in every detail with what has already been seen, and that is different from what has been thought of; furthermore, it must be definite and not a vague proposition. That is indeed difficult.

I think we can safely assume that no one understands quantum mechanics.

Outside of their particular area of expertise scientists are just as dumb as the next person.

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.

All we know so far is what doesn't work.

It turns out that all life is interconnected with all other life.