There Is Just One Thing

What We Will Have Attained When Neil Armstrong Steps Down Upon The Moon Is A Completely New Step In The Evolution Of Man.

Science Does Not Have A Moral Dimension. It Is Like A Knife. If You Give It To A Surgeon Or A Murderer, Each Will Use It Differently.

The Same Forces Of Nature Which Enable Us To Fly To The Stars, Enable Us Also To Destroy Our Star.

The First Men Who Set Out For Mars Had Better Make Sure They Leave Everything At Home In Apple-pie Order. They Won't Get Back To Earth For More Than Two And A Half Years. The Difficulties Of A Trip To Mars Are Formidable. . . . What Curious Information Will These First Explorers Carry Back From Mars? Nobody Knows-and Its Extremely Doubtful That Anyone Now Living Will Ever Know. All That Can Be Said With Certainty Today Is This: The Trip Will Be Made, And Will Be Made . . . Someday.

I Have Learned To Use The Word 'impossible' With The Greatest Caution.