My goal is simple: to understand the universe, why it is as it is and why it exists at all.

I haven't known any mathematicians who could reason

Even if there is only one possible unified theory, it is just a set of rules and equations. What is it that breathes fire into the equations and makes a universe for them to describe?

I think computer viruses should count as life. I think it says something about human nature that the only form of life we have created so far is purely destructive. We've created life in our own image.

Intelligence is the ability to adapt to change.

It is not clear if intelligence has any long-term survival value.

Not only does God play dice, but... he sometimes throws them where they cannot be seen.

Someone told me that each equation I included in the book would half the sales.

Why does the universe go to all the bother of existing?

Events do not happen in an arbitrary manner. They seem to reflect a certain underlying order, which may or may not be divinely inspired.

There are grounds for cautious optimism that we may now be near the end of the search for the ultimate laws of nature.

To confine our attention to terrestrial matters would be to limit the human spirit.

We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.

I speak to everyone in the same way, whether he is the garbage man or the president of the university.

Few are those who see with their own eyes, and feel with their own hearts.

Genius has always encountered violent opposition from idiots.

Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Equations live forever. Politics live for the moment.

I do not know what weapons World War 3 will be fought with, but World War 4 will be fought with sticks and stones.

Common sense is the collection of prejudices acquired by age 18

Ethical behavior should not be governed by the fear of punishment or hope of reward after death. It should be based on sympathy, education, and social ties.

Nothing will benefit human health and increase the chances for survival of life on Earth as much as the evolution to a vegetarian diet.

God does not play dice with the universe

When the solution is simple, God is answering.

When we face the world as free beings; admiring, asking and observing, we enter the realm of Art and Science.

Gravitation can not be held responsible for people falling in love.

Put your hand on a hot stove for a minute, and it seems like an hour.
Sit with a pretty girl for an hour, and it seems like a minute. That is relativity.

Things should be made as simple as possible, but not any simpler.  

Science without religion is lame, religion without science is blind.

Problems cannot be solved at the same level of awareness that created them.

Peace is achieved through understanding, not by violence.

Plato wrote in his "The Republic"
Each member of a society ought to do what they are best at and be alleviated from responsibility of those things they are not good at, which can be done by others.
I often wonder what kind of world this philosphy would create.
How would it be, if Johnny started school in the fifth grade, past the grade of his olderer sister in the second?
I think right now, capitolism and free enterprise tries to allow us to find our own levels in society. And I wonder how well that is working.
To me, the levels we find still seem to be determined by wealth and locations that present opportunity; and not merit.
Brilliant minds are rarely discovered in Podunk and feeble minds often have highly financed degrees.