The Limits Of The Possible Can Only

Before The Current Decade Ends, Fee-paying Passengers Will Be Experiencing Suborbital Flights Aboard Privately Funded Vehicles. . . . It Won't Be Too Long Before Bright Young Men And Women Set Their Eyes On Careers In Earth Orbit And Say: "i Want To Work 200 Kilometers From Home-straight Up!"

I Have A Fantasy Where Ted Turner Is Elected President But Refuses Because He Doesn't Want To Give Up Power.

No Trilogy Should Have More Than Four Books.

The Numbers Of Distinct Human Societies Or Nations, When Our Race Is Twice Its Present Age, May Be Far Greater Than The Total Number Of All The Men Who Have Ever Lived Up To The Present Time.

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.