“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...”

“The universe is seeming really huge right now. I need something to hold on to.”

“The Universe is under no obligation to make sense to you.”

“Sometimes I try to erase myself. And then, if I've done a good job, I'm erased. I'm nothing. And then the world is free to flow into me like water into an empty bowl. And I see. I hear. But not wit...”

“I never speak in silence.”

“Admitting failure is quite cleansing, but never - pleasurable.”

“What we have once enjoyed we can never lose. All that we love deeply becomes a part of us.”

“Why is it that we are constantly proving the world wrong but never proving ourselves right?”

“God does not begin by asking our ability, only our availability, and if we prove our dependability, He will increase our capability.”

“Macho does not prove mucho.”