Crash Programs Fail Because They Are Based

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

Looking Back, Nothing Seems So Simple Than A Utopian Vision Realised.

Get Me A Broom. I'll Sweep My Own Office.

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.

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