If there is anything in the world which I do firmly believe in, it is the universal validity of the law of causation.
Thomas HuxleyAnd when you cannot prove that people are wrong, but only that they are absurd, the best course is to let them alone.
Thomas HuxleyAny one who has studied the history of science knows that almost every great step therein has been made by the "anticipation of Nature," that is, by the invention of hypotheses, which, though verifiable, often had very little foundation to start with; and, not unfrequently, in spite of a long career of usefulness, turned out to be wholly erroneous in the long run.
Thomas Huxley