I think mistakes are the essence of science and law. It's impossible to conceive of either scientific progress or legal progress without understanding the important role of being wrong and of mistakes.
“Thirdly, even if we assume that the world is governed by purpose, we need only add that this purpose - or, if there are several, at least one of them - is not especially intent on preventing suffering, whether it is indifferent to suffering or actually rejoices in it.”