Here are some of Kevin's favorite quotes:

In the last few millennia we have made the most astonishing and unexpected discoveries about the Cosmos and our place within it, explorations that are exhilarating to consider. They remind us that humans have evolved to wonder, that understanding is a joy, that knowledge is prerequisite to survival.
Carl Sagan


I do not know what I may appear to the world; but to myself I seem to have been only like a boy playing on the seashore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.
Isaac Newton

The hardest thing to understand is why we can understand anything at all.
Albert Einstein

And here are some quotes found on the web:

An expert is a person who has made all the mistakes that can be made in a very narrow field.
Niels Bohr

If the facts don't fit the theory, change the facts.
Albert Einstein

If we knew what we were doing, it wouldn't be called research, would it?
Albert Einstein

The grand aim of all science is to cover the greatest number of empirical facts by logical deduction from the smallest number of hypotheses or axioms.
Albert Einstein

When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.
Albert Einstein

When I am working on a problem I never think about beauty. I only think about how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong.
Buckminster Fuller

An undefined problem has an infinite number of solutions.
Robert A. Humphrey

The great tragedy of science, the slaying of a beautiful theory by an ugly fact.
Thomas Henry Huxley

The scientific theory I like best is that the rings of Saturn are composed entirely of lost airline luggage.
Mark Russell

. . . the social sciences were for all those who had not yet decided what to do with their lives, and for all those whose premature frustrations led them into the sterile alleys of confrontation.
Peter Ustinov

Basic research is what I'm doing when I don't know what I'm doing.
Wernher Von Braun