"Whatever is genuine in social relations endures, despite of time, error, absence, and destiny; and that which has no inherent vitality had better die at once. A great poet has truly declared that constancy is no virtue, but a fact."

Next Quote

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.

— Ronald Fisher