The analysis of variance is not a mathematical theorem, but rather a convenient method of arranging the arithmetic.

Natural selection is a mechanism for generating an exceedingly high degree of improbability.

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.

Although no explanation can be expected to be satisfactory, it remains a possibility among others that Mendel was deceived by some assistant who knew too well what was expected. This possibility is supported by independent evidence that the data of most, if not all, of the experiments have been falsified so as to agree closely with Mendel's expectations.

... the actual and physical conduct of an experiment must govern the statistical procedure of its interpretation.

Natural selection is not evolution.

To consult the statistician after an experiment is finished is often merely to ask him to conduct a post mortem examination. He can perhaps say what the experiment died of.