The human understanding is a revelation from its maker, which can never be disputed or doubted. There can be no scepticism, Pyrrhonism, or incredulity or infidelity here. No prophecies, no miracles are necessary to prove this celestical communication. This revelation has made it certain that two and one make three, and that one is not three nor can three be one. We can never be so certain of any prophecy, or the fulfilment of any prophecy, or of any miracle, or the design of any miracle, as we are from the revelation of nature, that is, nature's God, that two and two are equal to four.