There are thousands of years in the past, and there is an unknown amount of time in the future. There are all kinds of opportunities, and there are all kinds of dangers.

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!

Powerful words harmonize heart and mind as if a symphony.

There is nothing spiritual about a marriage that uses guilt, blame, shame or religious manipulations to keep a relationship together.

I'm an eccentric, silly, observational guy, but I'm not gonna frighten off social conservatives.

Legislation that names a specific private organization to defund (rather than all organizations that engage in a particular activity) is improper and arguably unconstitutional.

Happiness is the best cosmetic.

I am really, I think, truly an easygoing, positive, fun person.

Lynching is the method of vulgar men! He who is deprived of compassion is deprived of everything!

The Indians are finding the gaps like a pin in a haystack.

A man without a purpose is like a ship without a rudder - never likely to reach home port. To us comes the signal: chart your course, set your sail, position your rudder, and proceed.

In the fell clutch of circumstance, I have not winced nor cried aloud: Under the bludgeoning of chance my head is bloody, but unbowed.