The Most Energetic Workers I Have Encountered

Among The Scenes Which Are Deeply Impressed On My Mind, None Exceed In Sublimity The Primeval [tropical] Forests, ... Temples Filled With The Varied Productions Of The God Of Nature. No One Can Stand In These Solitudes Unmoved, And Not Feel That There Is More In Man Than The Mere Breath Of His Body.

We Have Seen That The Senses And Intuitions, The Various Emotions And Faculties, Such As Love, Memory, Attention And Curiosity, Imitation, Reason, Etc., Of Which Man Boasts, May Be Found In An Incipient, Or Even Sometimes In A Well-developed Condition, In The Lower Animals.

It Has Sometimes Been Said That The Success Of The Origin Proved "that The Subject Was In The Air," Or "that Men's Minds Were Prepared For It." I Do Not Think That This Is Strictly True, For I Occasionally Sounded Not A Few Naturalists, And Never Happened To Come Across A Single One Who Seemed To Doubt About The Permanence Of Species.

I See No Good Reason Why The Views Given This Volume [the Origin Of Species] Should Shock The Religious Feelings Of Any One. It Is Satisfactory, As Showing How Transient Such Impressions Are, To Remember That The Greatest Discovery Ever Made By Man, Namely, The Law Of Attraction Of Gravity, Was Also Attacked By Leibnitz, 'as Subversive Of Natural, And Inferentially Of Revealed, Religion.'

In The Struggle For Survival, The Fittest Win Out At The Expense Of Their Rivals Because They Succeed In Adapting Themselves Best To Their Environment.