Often A Cold Shudder Has Run Through

I Ought, Or I Ought Not, Constitute The Whole Of Morality.

I Must Begin With A Good Body Of Facts And Not From A Principle (in Which I Always Suspect Some Fallacy) And Then As Much Deduction As You Please.

After My Return To England It Appeared To Me That By Following The Example Of Lyell In Geology, And By Collecting All Facts Which Bore In Any Way On The Variation Of Animals And Plants Under Domestication And Nature, Some Light Might Perhaps Be Thrown On The Whole Subject.

At No Time Am I A Quick Thinker Or Writer: Whatever I Have Done In Science Has Solely Been By Long Pondering, Patience And Industry.

Nothing Is Easier Than To Admit In Words The Truth Of The Universal Struggle For Life, Or More Difficult - At Least I Have Found It So - Than Constantly To Bear This Conclusion In Mind...we Behold The Face Of Nature Bright With Gladness...we Do Not See, Or We Forget, That The Birds Which Are Idly Singing Round Us Mostly Live On Insects And Seeds, And Are Thus Constantly Destroying Life.