Nothing Exists For Itself Alone, But Only

It Occurred To Me, In 1837, That Something Might Perhaps Be Made Of This Question (the Origin Of The Species) By Patiently Accumulating And Reflecting On All Sorts Of Facts Which Could Possibly Have Any Bearing On It

With Mammals The Male Appears To Win The Female Much More Through The Law Of Battle Than Through The Display Of His Charms.

Disbelief Crept Over Me At A Very Slow Rate, But At Last It Was Complete.

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.

Thus Disbelief Crept Over Me At A Very Slow Rate, But At Last Was Complete. The Rate Was So Slow That I Felt No Distress, And Have Never Since Doubted Even For A Single Second That My Conclusion Was Correct.