INTRODUCTION
Mr. Oliphant Smeaton has asked me to write a few words of preface to this little book. If I try, it is only because I am old enough to have had the privilege of knowing some of those who were most closely associated with Ferrier.
When I sat at the feet of Professor Campbell Fraser in the Metaphysics classroom at Edinburgh in 1875, Ferrier's writings were being much read by us students. The influence of Sir William Hamilton was fast crumbling in the minds of young men who felt rather than saw that much lay beyond it. We were still engrossed with the controversy, waged in books which now, alas! sell for a tenth of their former price, about the Conditioned and the Unconditioned. We still worked at Reid, Hamilton, and Mansel. But the attacks of Mill on the one side, and of Ferrier and Dr. Stirling on the other, were slowly but surely withdrawing our interest. Ferrier had pointed out a path which seemed to lead us in the direction of Germany if we would escape from Mill, and Stirling was urging us in the same sense. It was not merely that Ferrier had written books. He had died more than ten years earlier, but his personality was still a living influence. Echoes of his words came to us through
