One Good Test Is Worth

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

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.

One Good Test Is Worth A Thousand Expert Opinions.

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

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.