I Feel That One Species, Mankind, Doesn't

To Take An Unequivocal Stand, It Seems To Me, Is Of Greater Heuristic Value And Far More Likely To Stimulate Constructive Criticism Than To Evade The Issue.

It Is Curious How Often Erroneous Theories Have Had A Beneficial Effect For Particular Branches Of Science.

Isolating Mechanisms Are Biological Properties Of Individuals That Prevent The Interbreeding Of Populations That Are Actually Or Potentially Sympatric.

A Species Consists Of A Group Of Populations Which Replace Each Other Geographically Or Ecologically And Of Which The Neighboring Ones Integrate Or Hybridise Wherever They Are In Contact Or Which Are Potentially Capable Of Doing So (with One Or More Of The Populations) In Those Cases Where Contact Is Prevented By Geographical Or Ecological Barriers.

I Have The Honesty To Say I'm An Atheist. There Is Nothing That Supports The Idea Of A Personal God.