It is scientific only to say what is more likely and what less likely, and not to be proving all the time the possible and impossible.

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!

If life didn’t give you at least one person not wanting you to succeed then half of us would lose are motivation to climb that cliff, in order to prove them wrong.

As you meet the needs of others, you will never lack anything.

The "passion for incredulity" can produce as much self-deception as the uncritical will to believe.

I will fight every single day to pass comprehensive immigration-reform legislation with a path to citizenship.

The financial costs of family breakdown are incredibly high.

Get the love you deserve and gave your partner the love and support he deserves

It is sheer madness to live in want in order to be wealthy when you die.

I use fake tan myself with a self tanning spray.

There is no such thing as a 'free' government benefit. Ask small-business owners who are footing skyrocketing bills for bottomless jobless benefits.

I will entertain anything; it doesn't matter. You know, it's not obviously about the price, it's not about who, it's kind of about when and what. It's material, that's all.