Any Civilization That Doesn't Develop Space Travel

We Are An Intelligent Species And The Use Of Our Intelligence Quite Properly Gives Us Pleasure. In This Respect The Brain Is Like A Muscle. When We Think Well, We Feel Good. Understanding Is A Kind Of Ecstasy.

There Is A Reward Structure In Science That Is Very Interesting: Our Highest Honors Go To Those Who Disprove The Findings Of The Most Revered Among Us. So Einstein Is Revered Not Just Because He Made So Many Fundamental Contributions To Science, But Because He Found An Imperfection In The Fundamental Contribution Of Isaac Newton.

The Cosmos Is All That Is Or Was Or Ever Will Be. Our Feeblest Contemplations Of The Cosmos Stir Us -- There Is A Tingling In The Spine, A Catch In The Voice, A Faint Sensation, As If A Distant Memory, Of Falling From A Height. We Know We Are Approaching The Greatest Of Mysteries.

Few Scientists Now Dispute That Today's Soaring Levels Of Carbon Dioxide And Other Gases In The Atmosphere Will Cause Global Temperature Averages To Rise By As Much As Nine Degrees Fahrenheit Sometime After The Year 2000.

Widespread Intellectual And Moral Docility May Be Convenient For Leaders In The Short Term, But It Is Suicidal For Nations In The Long Term. One Of The Criteria For National Leadership Should Therefore Be A Talent For Understanding, Encouraging, And Making Constructive Use Of Vigorous Criticism.