Only The Fittest Will Survive.

May We Not Suspect That The Vague But Very Real Fears Of Children, Which Are Quite Independent Of Experience, Are The Inherited Effects Of Real Dangers And Abject Superstitions During Ancient Savage Times?

How Fleeting Are The Wishes And Efforts Of Man! How Short His Time! And Consequently How Poor Will His Products Be, Compared With Those Accumulated By Nature During Whole Geological Periods. Can We Wonder, Then, That Nature's Productions Should Be Far 'truer' In Character Than Man's Productions; That They Should Be Infinitely Better Adapted To The Most Complex Conditions Of Life, And Should Plainly Bear The Stamp Of Far Higher Workmanship?

After Five Years' Work I Allowed Myself To Speculate On The Subject, And Drew Up Some Short Notes; These I Enlarged In 1844 Into A Sketch Of The Conclusions, Which Then Seemed To Me Probable: From That Period To The Present Day I Have Steadily Pursued The Same Object. I Hope That I May Be Excused For Entering On These Personal Details, As I Give Them To Show That I Have Not Been Hasty In Coming To A Decision.‎

Extinction Has Only Separated Groups: It Has By No Means Made Them; For If Every Form Which Has Ever Lived On This Earth Were Suddenly To Reappear, Though It Would Be Quite Impossible To Give Definitions By Which Each Group Could Be Distinguished From Other Groups, As All Would Blend Together By Steps As Fine As Those Between The Finest Existing Varieties, Nevertheless A Natural Classification, Or At Least A Natural Arrangement, Would Be Possible.

Natural Selection Acts Solely By Accumulating Slight Successive Favorable Variations, It Can Produce No Great Or Sudden Modification; It Can Act Only By Very Short Steps.