“If you still believe that aliens would travel hundreds of light years to carve temporary graffiti in our wheat, then your imagination is one of the seven wonders of the world, and should be bronzed.”

“Like prospecting in the 19th century, reconnaissance of the asteroids would of necessity take place in an arena where trouble is likely and help is distant. Heroic stories of individual triumph and...”

“If you could drive straight down, into a tunnel bored through the crust of the planet, you'd hit this molten mess in about an hour. It's called the asthenosphere - a sluggish sea, several hundred m...”

“Plate tectonics is not all havoc and destruction. The slow movement of continents and ocean floors recycles carbon dioxide dissolved in the oceans back into the atmosphere. Without this slow speed ...”

“The stars look the same from night to night. Nebulae and galaxies are dully immutable, maintaining the same overall appearance for thousands or millions of years. Indeed, only the sun, moon and pla...”

“Each year, thousands of UFOs are sighted and reported, which is an impressive tally of unidentified aerial phenomena. Surveys show that roughly one-third of the populace believes that at least some...”

“Of the two powers, the two categories that take possession of us when we enter the world, space is by far the less mysterious. . . . Space is, after all, solid, monolithic. . . . Time, on the other...”

“The Earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those generals and emperors so that, in glory and triumph, they could become the momentary master...”

“A human being is a part of the whole, called by us "Universe", a part limited in time and space.”

“I shiver, thinking how easy it is to be totally wrong about people-to see one tiny part of them and confuse it for the whole, to see the cause and think it's the effect or vice versa”

“At sunrise everything is luminous but not clear.”

“I think it's impossible to really understand somebody, what they want, what they believe, and not love them the way they love themselves.”

“This is the strangest life I have ever known.”

“I feel very adventurous. There are so many doors to be opened, and I'm not afraid to look behind them.”

“Ive won his heart, but its like owning a house in which most of the doors are permanently locked. He wants to shield me from all unpleasantness. And its not really marriagenot like the marriage you...”