Faith Does Not Mean Credulity...

If ... We Choose A Group Of Social Phenomena With No Antecedent Knowledge Of The Causation Or Absence Of Causation Among Them, Then The Calculation Of Correlation Coefficients, Total Or Partial, Will Not Advance Us A Step Toward Evaluating The Importance Of The Causes At Work.

No Practical Biologist Interested In Sexual Reproduction Would Be Led To Work Out The Detailed Consequences Experienced By Organisms Having Three Or More Sexes; Yet What Else Should He Do If He Wishes To Understand Why The Sexes Are, In Fact, Always Two?

Natural Selection Is A Mechanism For Generating An Exceedingly High Degree Of Improbability.

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.

[coining The Phrase "test Of Significance"] Critical Tests Of This Kind May Be Called Tests Of Significance, And When Such Tests Are Available We May Discover Whether A Second Sample Is Or Is Not Significantly Different From The First.