The Price We Pay For Anticipation Of

Since, In The Long Run, Every Planetary Society Will Be Endangered By Impacts From Space, Every Surviving Civilization Is Obliged To Become Spacefaring — Not Because Of Exploratory Or Romantic Zeal, But For The Most Practical Reason Imaginable: Staying Alive.

There Are Many Instances In Science, Where Those Closest To The Intricacies Of The Subject Have A More Highly Developed Sense Of Its Intractability Than Those At Some Remove. On The Other Hand, Those At Too Great A Distance May, I Am Well Aware, Mistake Ignorance For Perspective.

When You Make The Finding Yourself - Even If You're The Last Person On Earth To See The Light - You'll Never Forget It.

Ufos: The Reliable Cases Are Uninteresting And In The Interesting Cases Are Unreliable.

Human History Can Be Viewed As A Slowly Dawning Awareness That We Are Members Of A Larger Group.