I Think In The Long Run The

No Trilogy Should Have More Than Four Books.

It Will Be Possible In A Few More Years To Build Radio Controlled Rockets Which Can Be Steered Into Such Orbits Beyond The Limits Of The Atmosphere And Left To Broadcast Scientific Information Back To The Earth. A Little Later, Manned Rockets Will Be Able To Make Similar Flights With Sufficient Excess Power To Break The Orbit And Return To Earth. (1945) [predicting Communications Satellites.]

The Exploration Of The Planets Is Now Closer To Us In Time Than The Exploration Of Africa By Stanley And Livingstone.

Deep Beneath The Surface Of The Sun, Enormous Forces Were Gathering. At Any Moment, The Energies Of A Million Hydrogen Bombs Might Burst Forth In The Awesome Explosion.... Climbing At Millions Of Miles Per Hour, An Invisible Fireball Many Times The Size Of Earth Would Leap From The Sun And Head Out Across Space.

Though The Man-apes Often Fought And Wrestled One Another, Their Disputes Very Seldom Resulted In Serious Injuries. Having No Claws Or Fighting Canine Teeth, And Being Well Protected By Hair, They Could Not Inflict Much Harm On One Another. In Any Event, They Had Little Surplus Energy For Such Unproductive Behavior; Snarling And Threatening Was A Much More Efficient Way Of Asserting Their Points Of View.