"We live in a complex age where many of the problems we face can, whatever their origins, only have solutions that inv…"

"Humans — who enslave, castrate, experiment on, and fillet other animals — have had an understandable penchant for pre…"

"Imagine, a room, awash in gasoline. And there are two implacable enemies in that room. One of them has 9,000 matches.…"

"It is important to distinguish between the amount of information and the quality of that information."

"There is a place with four suns in the sky — red, white, blue, and yellow; two of them are so close together that the…"

"It is easy to create an interstellar radio message which can be recognized as emanating unambiguously from intelligen…"

"The idea that God is an oversized white male with a flowing beard who sits in the sky and tallies the fall of every s…"

"In science it often happens that scientists say, "You know that's a really good argument; my position is mistaken," a…"

"We live in a society absolutely dependent on science and technology and yet have cleverly arranged things so that alm…"

"In fact, the thickness of the Earth's atmosphere, compared with the size of the Earth, is in about the same ratio as …"