Religion Is A Byproduct Of Fear.

Space Can Be Mapped And Crossed And Occupied Without Definable Limit; But It Can Never Be Conquered. When Our Race Has Reached Its Ultimate Achievements, And The Stars Themselves Are Scattered No More Widely Than The Seed Of Adam, Even Then We Shall Still Be Like Ants Crawling On The Face Of The Earth. The Ants Have Covered The World, But Have They Conquered It - For What Do Their Countless Colonies Know Of It, Or Of Each Other?

The Earth Would Only Have To Move A Few Million Kilometers Sunward-or Starward-for The Delicate Balance Of Climate To Be Destroyed. The Antarctic Icecap Would Melt And Flood All Low-lying Land; Or The Oceans Would Freeze And The Whole World Would Be Locked In Eternal Winter. Just A Nudge In Either Direction Would Be Enough.

I Don't Believe In God But I'm Very Interested In Her.

There Is A Special Sadness In Achievement, In The Knowledge That A Long-desired Goal Has Been Attained At Last, And That Life Must Now Be Shaped Toward New Ends.

All Human Plans [are] Subject To Ruthless Revision By Nature, Or Fate, Or Whatever One Preferred To Call The Powers Behind The Universe.