One Good Test Is Worth A Thousand

I Only Hope That We Shall Not Wait To Adopt The Program Until After Our Astronomers Have Reported A New And Unsuspected Asteroid Moving Across Their Fields Of Vision With Menacing Speed. At That Point It Will Be Too Late!

If We Were To Start Today On An Organized And Well-supported Space Program I Believe A Practical Passenger Rocket Can Be Built And Tested Within Ten Years.

The Best Computer Is A Man, And It’s The Only One That Can Be Mass-produced By Unskilled Labor.

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.

Conquering The Universe One Has To Solve Two Problems: Gravity And Red Tape. We Could Have Mastered Gravity.