All inquiries carry with them some element of risk.

If some good evidence for life after death were announced, I'd be eager to examine it; but it would have to be real scientific data, not mere anecdote. As with the face on Mars and alien abductions, better the hard truth, I say, than the comforting fantasy.

Across the sea of space, the stars are other suns.

Ask courageous questions. Do not be satisfied with superficial answers.

Science is a way to call the bluff of those who only pretend to knowledge. It is a bulwark against mysticism, against superstition, against religion misapplied to where it has no business being.

Looking at fires when high, by the way, especially through one of those prism kaleidoscopes which image their surroundings, is an extraordinarily moving and beautiful experience.

The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together.