Human beings have a demonstrated talent for self-deception when their emotions are stirred.

Form follows function - that has been misunderstood. Form and function should be one, joined in a spiritual union.

Study nature, love nature, stay close to nature. It will never fail you.

It is far better to grasp the universe as it is than to persist in delusion, however satisfying and reassuring.

We are, each of us, a multitude. Within us is a little universe.

Don't judge everyone else by your own limited experience.

The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.

The notion that science and spirituality are somehow mutually exclusive does a disservice to both.

Science is a way of thinking much more than it is a body of knowledge.

Where we have strong emotions, we're liable to fool ourselves.

The cure for a fallacious argument is a better argument, not the suppression of ideas.

we make our world significant by the courage of our questions and the depth of our answers.

To live in the hearts of others is to never die in those we leave behind.

The dumbing down of America is evident in the slow decay of substantive content, a kind of celebration of ignorance.

Better the hard truth, I say, than the comforting fantasy.

I don't want to believe. I want to know.

The absence of evidence is not the evidence of absence.

Even through your hardest days, remember we are all made of stardust.

Be grateful every day for the brief but magnificent opportunity that life provides.