There Are Several Other Sources Of Enjoyment

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.

I Would Give Absolutely Nothing For The Theory Of Natural Selection, If It Requires Miraculous Additions At Any One Stage Of Descent.

The Moral Faculties Are Generally And Justly Esteemed As Of Higher Value Than The Intellectual Powers.

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.‎

Nothing Before Had Ever Made Me Thoroughly Realise, Though I Had Read Various Scientific Books, That Science Consists In Grouping Facts So That General Laws Or Conclusions May Be Drawn From Them.