On The Ordinary View Of Each Species

I Have Steadily Endeavored To Keep My Mind Free So As To Give Up Any Hypothesis, However Much Beloved (and I Cannot Resist Forming One On Every Subject), As Soon As The Facts Are Shown To Be Opposed To It.

A Man's Friendships Are One Of The Best Measures Of His Worth.

One General Law, Leading To The Advancement Of All Organic Beings, Namely, Multiply, Vary, Let The Strongest Live And The Weakest Die.

On The Theory Of Natural Selection We Can Clearly Understand The Full Meaning Of That Old Canon In Natural History, “natura Non Facit Saltum.” This Canon, If We Look Only To The Present Inhabitants Of The World, Is Not Strictly Correct, But If We Include All Those Of Past Times, It Must By My Theory Be Strictly True.

It Is Not The Most Intellectual Of The Species That Survives; It Is Not The Strongest That Survives; But The Species That Survives Is The One That Is Able Best To Adapt And Adjust To The Changing Environment In Which It Finds Itself.