There Is No Sadder Sight In The

The Facts Of Variability, Of The Struggle For Existence, Of Adaptation To Conditions, Were Notorious Enough; But None Of Us Had Suspected That The Road To The Heart Of The Species Problem Lay Through Them, Until Darwin And Wallace Dispelled The Darkness.

It Is Because The Body Is A Machine That Education Is Possible. Education Is The Formation Of Habits, A Superinducing Of An Artificial Organization Upon The Natural Organization Of The Body.

Science And Literature Are Not Two Things, But Two Sides Of One Thing.

It Sounds Paradoxical To Say The Attainment Of Scientific Truth Has Been Effected, To A Great Extent, By The Help Of Scientific Errors.

That Which Endures Is Not One Or Another Association Of Living Forms, But The Process Of Which The Cosmos Is The Product, And Of Which These Are Among The Transitory Expressions.