I believe our future depends powerfully on how well we understand this cosmos in which we float, like a mote of dust in the morning sky.

It is of interest to note that while some dolphins are reported to have learned English - up to fifty words used in correct context - no human being has been reported to have learned dolphinese.

This oak tree and me, we're made of the same stuff.

The illegality of cannabis is outrageous.

If all the suns but ours collapsed tonight, how many lifetimes would it take us to realize that we were alone?

Science is merely an extremely powerful method of winnowing what's true from what feels good.

We are...capable of using our compassion and our intelligence, our technology and our wealth, to make an abundant and meaningful life for every inhabitant of this planet. To enhance enormously our understanding of the Universe, and to carry us to the stars.