A marine protozoan is an aqueous salty system in an aqueous salty medium, but a man is an aqueous salty system in a medium in which there is but little water and most of that poor in salts.

The continuous invention of new ways of observing is man's special secret of living.

The principles now being discovered at work in the brain may provide, in the future, machines even more powerful than those we can at present foresee.

What would be the use of a neuroscience that cannot tell us anything about love?

Who controls the past controls the future. Who controls the present controls the past.

Man has always seen himself the peak of creation. The part of the universe that thinks. The purpose for it all. It's no doubt a gratifying view, but the universe may have a different opinion.

Carlton was a blade

Each of us has some unique capability waiting for realization. Every person is valuable in his own existence, for himself alone... each of us can bring to fruition these innate, God-given abilities.

The "can do" logic, by its own nature, does not accept limits. And an empire does not have a graceful way to evolve out of this role. History demonstrates this time and again.

I think the lion, besides the elephant, was the one animal that I just started thinking about so much.

Nature is our kindest friend and best critic in experimental science if we only allow her intimations to fall unbiased on our minds.

I don't feel that censorship keeps me from doing the work, though. I'm my bigger censor.

Pioneering in space was something I would willingly give my life for.

Remember how Margaret Thatcher came to believe that abroad was more important than at home? Didn't do her much good.