Because There Is A Law Such As

Our Only Chance Of Long-term Survival Is Not To Remain Lurking On Planet Earth, But To Spread Out Into Space.

The Initial Configuration Of The Universe May Have Been Chosen By God, Or It May Itself Have Been Determined By The Laws Of Science. In Either Case, It Would Seem That Everything In The Universe Would Then Be Determined By Evolution According To The Laws Of Science, So It Is Difficult To See How We Can Be Masters Of Our Fate.

I Put A Lot Of Effort Into Writing 'a Briefer History' At A Time When I Was Critically Ill With Pneumonia Because I Think That It's Important For Scientists To Explain Their Work, Particularly In Cosmology. This Now Answers Many Questions Once Asked Of Religion.

The Boundary Condition Of The Universe Is That It Has No Boundary.

Simplicity Is A Matter Of Taste