The secret of getting ahead is getting started.
Wherever you are - be all there.
The most effective way to do it, is to do it.
Never complain and never explain.
To be a good loser is to learn how to win.
It's always too early to quit.
Know or listen to those who know.
Things do not happen. Things are made to happen.
If you think you can do it, you can.
Leap, and the net will appear.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Our scientific power has outrun our spiritual power. We have guided missiles and misguided men.
Science investigates religion interprets. Science gives man knowledge which is power religion gives man wisdom which is control.
No amount of experimentation can ever prove me right a single experiment can prove me wrong.
Bad times have a scientific value. These are occasions a good learner would not miss.
Science does not know its debt to imagination.
Men love to wonder, and that is the seed of science.
The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.
Aerodynamically, the bumble bee shouldn't be able to fly, but the bumble bee doesn't know it so it goes on flying anyway.
Science never solves a problem without creating ten more.