Although science claims the whole universe as its field... it confesses that its ignorance is more widely extended than its knowledge. In this very c… - Karl Pearson

All great scientists have, in a certain sense, been great artists; the man with no imagination may collect facts, but he cannot make great discoveries.

This idea of Death as the lawless one... who strikes at random, arose early in mediaeval tradition, and is represented in the well known Dances of Death... Parallel with this notion... has run in the mind of the folk a vague idea of Chance as that which obeys no rule and defies all measure and prediction. The two conceptions cross one another in the medieval representation of Death seizing the gambler's dice-box and casting the dice with him for his life.

[W]hen the law is reached... it must be tested and criticised by its discoverer in every conceivable way, till he is certain that the imagination has not played him false, and that his law is in real agreement with the whole group of phenomena...