Calderwood and Fraser had both their followings. The moral philosophers wore an air of certainty, for they knew that if they stuck to Calderwood he would pull them through. You cannot lose yourself in the back garden. But the metaphysicians had their doubts. Fraser led them into strange places, and said he would meet them there again next day. They wandered to their lodgings, and got into difficulties with their landlady for saying that she was only an aggregate of sense phenomena. Fraser was rather a hazardous cure for weak intellects. Young men whose anchor had been certainty of themselves went into that class floating buoyantly on the sea of facts, and came out all adrift--on the sea of theory--in an open boat--rudderless--one oar--the boat scuttled. How could they think there was any chance for them, when the professor was not even sure of himself? I see him rising in a daze from his chair and putting his hands through his hair. "Do I exist," he said, thoughtfully, "strictly so called?" The students (if it was the beginning of the session) looked a little startled. This was a matter that had not previously disturbed them. Still, if the professor was in doubt, there must be something in it. He began to argue it out, and an uncomfortable silence held the room in awe. If he did not exist, the chances were that they did not exist either. It was thus a personal question. The professor glanced round slowly for an illustration. "Am I a table?" A pained look travelled over the class. Was it just possible that they were all tables? It is no wonder that the students who do not go to the bottom during their first month of metaphysics begin to give themselves airs strictly so called. In the privacy of their room at the top of the house, they pinch themselves to see if they are still there. He would, I think, be a sorry creature who did not find something to admire in Campbell Fraser. Metaphysics may not trouble you, as it troubles him, but you do not sit under the man without seeing his transparent honesty and feeling that he is genuine. In appearance and in habit of thought he is an ideal philosopher, and his communings with himself have lifted him to a level of serenity that is worth struggling for. Of all the arts professors in Edinburgh, he is probably the most difficult to understand, and students in a hurry have called his lectures childish. If so, it may be all the better for them. For the first half of the hour, they say, he tells you what he is going to do, and for the second half he revises. Certainly he is vastly explanatory, but then he is not so young as they are, and so he has his doubts. They are so cock-sure that they wonder to see him hesitate. Often there is a mist on the mountain when it is all clear in the valley.