We Are Optimists, Until We Are Not.

The Following Proposition Seems To Me In A High Degree Probable—namely, That Any Animal Whatever, Endowed With Well-marked Social Instincts, The Parental And Filial Affections Being Here Included, Would Inevitably Acquire A Moral Sense Or Conscience, As Soon As Its Intellectual Powers Had Become As Well, Or Nearly As Well Developed, As In Man. For, Firstly, The Social Instincts Lead An Animal To Take Pleasure In The Society Of Its Fellows, To Feel A Certain Amount Of Sympathy With Them, And To Perform Various Services For Them.

Besides Love And Sympathy, Animals Exhibit Other Qualities Connected With The Social Instincts Which In Us Would Be Called Moral.

It Is No Valid Objection That Science As Yet Throws No Light On The Far Higher Problem Of The Essence Or Origin Of Life. Who Can Explain Gravity? No One Now Objects To Following Out The Results Consequent On This Unknown Element Of Attraction.

I Have Called This Principle, By Which Each Slight Variation, If Useful, Is Preserved, By The Term Natural Selection, In Order To Mark Its Relation To Man's Power Of Selection. But The Expression Often Used By Mr. Herbert Spencer Of The Survival Of The Fittest Is More Accurate, And Is Sometimes Equally Convenient.

To Suppose That The Eye Could Have Been Formed By Natural Selection, Seems, I Freely Confess, Absurd In The Highest Possible Degree