To put your hands in a river is to feel the chords that bind the earth together.

It is the imagination that gives shape to the universe.

Because you have seen something doesn't mean you can explain it. Differing interpretations will always abound, even when good minds come to bear. The kernel of indisputable information is a dot in space; interpretations grow out of the desire to make this point a line, to give it direction. The directions in which it can be sent, the uses to which it can be put by a culturally, professionally, and geographically diverse society are almost without limit. The possibilities make good scientists chary.

The cold view to take of our future is that we are therefore headed for extinction in a universe of impersonal chemical, physical, and biological laws. A more productive, certainly more engaging view, is that we have the intelligence to grasp what is happening, the composure not to be intimidated by its complexity, and the courage to take steps that may bear no fruit in our lifetimes.

People think that if you've written a book and somebody's given you a pat on the back then, you know, it's all - you're all settled, you know? You're going to be fine. I know that if I'm not confused, and really afraid, my work isn't going to be any good.

We simply do not understand our place in the universe and have not the courage to admit it.

There's so much to be afraid of.