Evolution ... Is Opportunistic, Hence Unpredictable.

Scientific Progress Consists In The Development Of New Concepts.

In Those Early Years In New York When I Was A Stranger In A Big City, It Was The Companionship And Later Friendship Which I Was Offered In The Linnean Society That Was The Most Important Thing In My Life.

The History Of Science Knows Scores Of Instances Where An Investigator Was In The Possession Of All The Important Facts For A New Theory But Simply Failed To Ask The Right Questions.

The Most Consequential Change In Man's View Of The World, Of Living Nature And Of Himself Came With The Introduction, Over A Period Of Some 100 Years Beginning Only In The 18th Century, Of The Idea Of Change Itself, Of Change Over Periods Of Time: In A Word, Of Evolution.

Mathematics Is As Little A Science As Grammar Is A Language.