Scientific knowledge is a body of statements of varying degrees of certainty -- some most unsure, some nearly sure, none absolutely certain.

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!

Sometimes everything breaks up so something new can break through.

May the Lord grant you a tender kind heart.

The interior of our skulls contains a portal to infinity.

why did I have to keep learning this same thing over and over?

I see you young and soft oh little baby Little feet, little hands, little baby One year of crying and the words creep up inside Creep into your mind So much to say

Canada has one great novelist (Robertson Davies), which means it has one for every twenty-five million citizens - the world's highest ratio.

Poetry's work is not simply the recording of inner or outer perception; it makes by words and music new possibilities of perceiving

It therefore become essential for the future of Judaism itself that its advancement should be correlated with a similar effort to advance the cause of religion generally.

To be locked into partisan politics doesn't permit you to think clearly.

The stubborn stops when finding a mistake, the wise man will not stop until finding the true.