If an apple was magnified to the size of the Earth, then the atoms in the apple would be approximately the size of the original apple.

If you think you understand quantum mechanics, you don't understand quantum mechanics.

Our responsibility is to do what we can, learn what we can, improve the solutions, and pass them on.

It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong.

If you can't explain something to a first year student, then you haven't really understood .

God was invented to explain mystery. God is always invented to explain those things that you do not understand.

Nature uses only the longest threads to weave her patterns, so that each small piece of her fabric reveals the organization of the entire tapestry.

My rule is, when you are unhappy, think about it. But when you're happy, don't. Why spoil it? You're probably happy for some ridiculous reason and you'd just spoil it to know it.

Religion is a culture of faith; science is a culture of doubt.

The only way to deep happiness is to do something you love to the best of your ability

Einstein was a giant. His head was in the clouds, but his feet were on the ground. But those of us who are not that tall have to choose!

We're practical and sensible but we're also dreamers. Don't forget that part of you. There's nothing wrong with being sensible, but dreams are what make you fly. And you're destined to touch the sky.

When you love someone, be sure that you will be loved in return.

She did not arrive at Annandale without taking the chisel to herself more than once, without rubbing up against a few boys to smooth an edge or two.

Compressed air can provide limitless amounts of clean energy using technology we have had for hundreds of years.

It is easy to tell the toiler How best he can carry his pack But no one can rate a burden's weight Until it has been on his back

Philosophy itself cannot but benefit from our disputes, for if our conceptions prove true, new achievements will be made; if false, their refutation will further confirm the original doctrines.

Dwell as near as possible to the channel in which your life flows.

I wasn't really raised to be the type of person to have doubts.

Try not to make a straight line crooked.

Maybe when your mother died young, you became instantly old.