“Fear connotes something that interferes with what youre doing.”

“Love is a combination of friendship, passion, and respect.”

“To look out at this kind of creation out here and not believe in God is to me impossible.”

“I don't know what you could say about a day in which you have seen four beautiful sunsets.”

“The best space movie in my view is 'Apollo 13.' That's just the way it happened.”

“I can't say I've ever had a dream about space or that I ponder it all the time.”

“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 where to go, but I have been on the road.”

“While she was in transit, being unattached was exhilarating, but the moment she stopped, so did the high.”

“The natural tenderness and delicacy of our constitution, added to the many dangers we are subject to from your sex, renders it almost impossible for a single lady to travel without injury to her ch...”

“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.”