“Testing leads to failure, and failure leads to understanding.”

“With any luck, by the time NASA's space probe hits Pluto, you'll be booking a spaceflight with a privately run suborbital airline.”

“Space travel is the only technology that is more dangerous and more expensive now than it was in its first year. Fifty years after Yuri Gagarin, the space shuttle ended up being more dangerous and ...”

“The photographs of space taken by our astronauts have been published all over the place. But the eye is a much more dynamic mechanism than any camera or pictures. It's a more exciting view in perso...”

“We didn't know the importance of home computers before the Internet. We had them mostly for fun, then the Internet came along and was enabled by all the PCs out there.”

“Airplanes were invented by natural selection. Now you can say that intelligent design designs our airplanes of today, but there was no intelligent design really designing those early airplanes. The...”

“Lost Time is never found again.”

“How you spend your time is more important than how you spend your money. Money mistakes can be corrected, but time is gone forever.”

“Men talk of killing time, while time quietly kills them.”

“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.”

“You might as well make yourself fly as to make yourself love.”

“Those who don't jump will never fly.”

“In this world of ours, the sparrow must live like a hawk if he is to fly at all.”