“I believe that every human has a finite amount of heartbeats. I don't intend to waste any of mine running around doing exercises.”

“I believe that every human has a finite number of heart-beats. I don't intend to waste any of mine running around doing exercises. ”

“Houston, Tranquillity Base here. The Eagle has landed.”

“It suddenly struck me that that tiny pea, pretty and blue, was the Earth. I put up my thumb and shut one eye, and my thumb blotted out the planet Earth. I didn't feel like a giant. I felt very, very small.”

“I am, and ever will be, a white-socks, pocket-protector, nerdy engineer, born under the second law of thermodynamics, steeped in steam tables, in love with free-body diagrams, transformed by Laplace and propelled by compressible flow.”

“The single observation I would offer for your consideration is that some things are beyond your control. You can lose your health to illness or accident. You can lose your wealth to all manner of unpredictable sources. What are not easily stolen from you without your cooperation are your principles and your values. They are your most important possessions and, if carefully selected and nurtured, will well serve you and your fellow man.”

“That's one small step for a man, one giant leap for mankind”