"Mars has global warming, but without a greenhouse and without the participation of Martians. These parallel global warmings -- observed simultaneously on Mars and on Earth -- can only be a straightline consequence of the effect of the one same factor: a long-time change in solar irradiance."

"Though the theology of Christianity had thus sunk to the lowly estate of a mere delusion of the rabble, pro…"

"At worst, they were vile creatures who needed to be wiped from the face of the earth. At best, such behavio…"

"The line that connects the bombing of civilian populations to the mountain removed by strip mining … to the…"

"In the whole range of earthly experience, no quality is more attractive and ennobling than moral courage. L…"

"Man cannot will unless he has first understood that he must count on no one but himself; that he is alone, …"

"I believe in intellectual hospitality. I love men that have a little horizon to their minds -- a little sky…"