Experimental Observations Are Only Experience Carefully Planned

The Tendency Of Modern Scientific Teaching Is To Neglect The Great Books, To Lay Far Too Much Stress Upon Relatively Unimportant Modern Work, And To Present Masses Of Detail Of Doubtful Truth And Questionable Weight In Such A Way As To Obscure Principles.

It Was Darwin's Chief Contribution, Not Only To Biology But To The Whole Of Natural Science, To Have Brought To Light A Process By Which Contingencies A Priori Improbable, Are Given, In The Process Of Time, An Increasing Probability, Until It Is Their Non-occurrence Rather Than Their Occurrence Which Becomes Highly Improbable.

The So-called Co-efficient Of Heritability, Which I Regard As One Of Those Unfortunate Short-cuts, Which Have Often Emerged In Biometry For Lack Of A More Thorough Analysis Of The Data.

Inductive Inference Is The Only Process Known To Us By Which Essentially New Knowledge Comes Into The World.

Experimental Observations Are Only Experience Carefully Planned In Advance, And Designed To Form A Secure Basis Of New Knowledge.