upon sensation merely, but human reason sees not only the sequence, but also the manner of the sequence. We must also remember that in mere succession, the antecedents and consequent may change places, but in causation, the cause and the effect cannot be reversed. And it is also self-evident that everything which we must believe had an origin, must have had a cause. No one can deny such a principle of causality. If, therefore, the universe had an origin, then there must have been a cause. The best