Turbulence is the most important unsolved problem of classical physics.

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

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.

Nature does not care what we call it, she just keeps on doing it.

Scientific knowledge is an enabling power to do either good or bad — but it does not carry instructions on how to use it.

But see that the imagination of nature is far, far greater than the imagination of man.

A very great deal more truth can become known than can be proven.