One planet, one experiment.

Science and technology are what we can do; morality is what we agree we should or should not do.

We should preserve every scrap of biodiversity as priceless while we learn to use it and come to understand what it means to humanity.

Common sense is merely unaided intuition, and unaided intuition is reasoning performed in the absense of instruments and the tested knowledge of science. Common sense tells us that massive satellites cannot hang suspended 36,000 kilometers above the one point on the earth's surface, but they do.

Ants have the most complicated social organization on earth next to humans.

I would say that for the sake of human progress, the best thing we could possibly do would be to diminish, to the point of eliminating, religious faiths. But certainly not eliminating the natural yearnings of our species or the asking of these great questions.

Humanity is exalted not because we are so far above other living creatures, but because knowing them well elevates the very concept of life.