After this controversy was over, Ferrier's interest in polemical philosophy in great degree waned; and in the quiet of the old University town of St. Andrews--the town which provides so rich a fund of historic interest combined with the academic calm of University life--Ferrier passed the remainder of his days working at his favourite subjects. Sometimes these were varied by incursions into literature, in which his interest grew ever keener; and economics, which was one of the subjects he was bound to teach. His life was uneventful; it was varied little by expeditions into the outer world, much as these would have been appreciated by his friends. His whole interest was centred in his work and in the University in which he taught, and whose well-being was so dear to him. Of his letters, few, unfortunately, have been preserved; and this is the more unfortunate that he had the gift, now comparatively so rare, of expressing himself with ease, and in bright, well-chosen language. Of his correspondents one only seems to have preserved the letters written to him, Mr. George Makgill of Kemback, a neighbouring laird in Fife and advocate in Edinburgh, whose similarity in tastes drew him towards the St. Andrews Philosophy Professor. Of these letters there are some of sufficient interest to bear quotation. One of the first is written in October 1851 from St. Andrews, and plunges into the deepest topics without much preface. Ferrier says:-- 'What is the Beginning of Philosophy? Philosophy must have had the same Beginning that all other things have, otherwise there would be something peculiar or anomalous or sectarian in its origin, which would destroy its claims to genuineness and catholicity. What, then, is the Beginning of all things and consequently the Beginning of Philosophy? 'Answer--WANT. 'Want is the Beginning of Philosophy because it is the Beginning of all things. Is the Beginning of Philosophy a bodily want? No. Why not? Because nothing that may be given to the Body has any effect in appeasing the want. The Beginning of Philosophy, then, must be an intellectual want--a Hunger of the Soul. 'But all wants have their objects in which they seek and find their gratification. What then is the object of the hunger of the soul? 'Answer--KNOWLEDGE.