The genuine realist, if he is an unbeliever, will always find strength and ability to disbelieve in the miraculous, and if he is confronted with a miracle as an irrefutable fact he would rather disbelieve his own senses than admit the miraculous also.
There is nothing that God hath established in a constant course of nature, and which therefore is done every day, but would seem a Miracle, and exercise our admiration, if it were done but once.
There are three forces, the only three forces capable of conquering and enslaving forever the conscience of these weak rebels in the interests of their own happiness. They are: the miracle, the mystery and authority.