Beauty is not in the face; beauty is a light in the heart.
The most essential characteristic of scientific technique is that it proceeds from experiment, not from tradition.
Every kid starts out as a natural-born scientist, and then we beat it out of them. A few trickle through the system with their wonder and enthusiasm for science intact.
I'd rather be a climbing ape than a falling angel.
The cosmos is full beyond measure of elegant truths; of exquisite interrelationships; of the awesome machinery of nature.
There are two possible outcomes: if the result confirms the hypothesis, then you've made a measurement. If the result is contrary to the hypothesis, then you've made a discovery.
If you would understand anything, observe its beginning and its development.
All of science is nothing more than the refinement of everyday thinking.
Common sense is the most fairly distributed thing in the world, for each one thinks he is so well-endowed with it that even those who are hardest to satisfy in all other matters are not in the habit of desiring more of it than they already have.
Curious learning not only makes unpleasant things less unpleasant, but also make pleasant things more pleasant.
Life must be lived forward, but can only be understood backward.
Anger gives us the strength to do great or terrible things, but takes away from us our Humanity.
Man is made by his belief. As he believes, so he is.
I think it's great to be funny, but it's better if you can do it without hurting people.
Our life is frittered away by detail.
All ideologies are idiotic, whether religious or political, for it is conceptual thinking, the conceptual word, which has so unfortunately divided man.
At first dreams seem impossible, then improbable, then inevitable.
Writing is nothing more than a guided dream.
If you can dream it, you can do it.
The successful do not pursue what's probable; the best pursue the heart-pounding, exciting, really big, difference-making dreams.
Dream no small dreams for they have no power to move the hearts of men.
"This is why dreams can be such dangerous things: they smolder on like a fire does, and sometimes consume us completely."
But there is suffering in life, and there are defeats. No one can avoid them. But it's better to lose some of the battles in the struggles for your dreams than to be defeated without ever knowing what you're fighting for.
Dear future generations: Please accept our apologies. We were rolling drunk on petroleum. Love, 2006 A.D.
Stay away from what might have been and look at what will be.
The reason people find it so hard to be happy is that they always see the past better than it was, the present worse than it is, and the future less resolved than it will be.
The best thing about the future is that it comes one day at a time.
Don't worry about what anybody else is going to do. The best way to predict the future is to invent it.
The future has several names. For the weak, it is the impossible. For the fainthearted, it is the unknown. For the thoughtful and valiant, it is the ideal.
All appears to change when we change.