“Bravery comes along as a gradual accumulation of discipline”

“Humanity is destined to explore, settle, and expand outward into the universe.”

“There may be aliens in our Milky Way galaxy, and there are billions of other galaxies. The probability is almost certain that there is life somewhere in space.”

“Space travel for everyone is the next frontier in the human experience.”

“As we begin to have landings on the moon, we can alternate those with vertical launch of similar crew modules on similar launch vehicles for vertical-launch tourism in space, if you want to call it...”

“As someone who flew two space capsules and twice landed in the ocean, I can attest from personal experience how much logistics work is needed to get you home.”

“Education doesnt make you happy. Nor does freedom. We dont become happy just because were free if we are. Or because weve been educated if we have. But because education may be the means by which...”

“Because I trust in the ever-changing climate of the heart. (At least, today I feel that way.) I think it is necessary to have many experiences for the sake of feeling something; for the sake of bei...”

“The past has no power over the present moment.”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettie...”

“To know the history of science is to recognize the mortality of any claim to universal truth. ”

“The scientist only imposes two things, namely truth and sincerity, imposes them upon himself and upon other scientists.”

“I could never be your godAnd I don't even think I want the job anymore”

“A stupid leader is like a dog whos in love with his own voice. He will bark incessantly believing that people admire his tune. A wise leader gets his point across in as few words as possible and th...”

“A leader, without wisdom, is dangerous. A wise person, without leadership, is useless. But if they work together, they are unstoppable.”