Looking Back, Nothing Seems So

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.

If We Continue At This Leisurly Pace, We Will Have To Pass Russian Customs When We Land On The Moon.

It Will Free Man From The Remaining Chains, The Chains Of Gravity Which Still Tie Him To This Planet.

With Our Present Knowledge, We Can Respond To The Challenge Of Stellar Space Flight Solely With Intellectual Concepts And Purely Hypothetical Analysis. Hardware Solutions Are Still Entirely Beyond Our Reach And Far, Far Away.

I Believe That The Time Has Arrived For Medical Investigation Of The Problems Of Manned Rocket Flight, For It Will Not Be The Engineering Problems But Rather The Limits Of The Human Frame That Will Make The Final Decision As To Whether Manned Space Flight Will Eventually Become A Reality.