Don't Tell Me That Man

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 Find It As Difficult To Understand A Scientist Who Does Not Acknowledge The Presence Of A Superior Rationality Behind The Existence Of The Universe As It Is To Comprehend A Theologian Who Would Deny The Advances Of Science.

Nature Does Not Know Extinction; All It Knows Is Transformation. ... Everything Science Has Taught Me-and Continues To Teach Me-strengthens My Belief In The Continuity Of Our Spiritual Existence After Death. Nothing Disappears Without A Trace.

The Greatest Gain From Space Travel Consists In The Extension Of Our Knowledge. In A Hundred Years This Newly Won Knowledge Will Pay Huge And Unexpected Dividends.

The Logistic Requirements For A Large, Elaborate Mission To Mars Are No Greater That Those For A Minor Military Operation Extending Over A Limited Theatre Of War.