An imbecile habit has arisen in modern controversy of saying that such and such a creed can be held in one age but cannot be held in another. Some dogma, we are told, was credible in the twelfth century, but is not credible in the twentieth. You might as well say that a certain philosophy can be believed on Mondays, but cannot be believed on Tuesdays. You might as well say of a view of the cosmos that it was suitable to half-past three, but not suitable to half-past four. What a man can believe depends upon his philosophy, not upon the clock or the century.