The electron is a theory. But the theory is so good we can almost consider them real.

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!

Because of course, for every revelation of weakness, there had to be an equal and opposite show of strength.

Uncertainty is one of government recipes.

I am all for the short and merry life.

I've been married before, but I've never had my dream wedding in Vegas. I wanted to do it there because it's casual, quick, not religious and, most of all, very romantic.

I could never resist the call of the trail.

Memorial services are the cocktail parties of the geriatric set.

Pause and remember - You will make it to the other side of this hardship. One day you will look back with wiser eyes, understanding and gratitude. Hang in there!

I'm a walking record.

I have great ambitions for when I get out of government. I will watch a broader range of stuff.

Mostly everything gets worse before it gets better.