JAMES FREDERICK FERRIER (1808-1864), Scottish metaphysical writer, was born in Edinburgh on the 16th of June 1808, the son of John Ferrier, writer to the signet. His mother was a sister of John Wilson (Christopher North). He was educated at the university of Edinburgh and Magdalen College, Oxford, and subsequently, his metaphysical tastes having been fostered by his intimate friend, Sir William Hamilton, spent some time at Heidelberg studying German philosophy. In 1842 he was appointed professor of civil history in Edinburgh University, and in 184 5 professor of moral philosophy and political economy at St Andrews. He was twice an unsuccessful candidate for chairs in Edinburgh, for that of moral philosophy on Wilson's resignation in 1852, and for that of logic and metaphysics in 1856, after Hamilton's death. He remained at St Andrews till his death on the r 1th of June 1864. He married his cousin, Margaret Anne, daughter of John Wilson. He had five children, one of whom became the wife of Sir Alexander Grant.
Ferrier's first contribution to metaphysics was a series of articles in Blackwood's Magazine (1838-1839), entitled An Introduction to the Philosophy of Consciousness. In these he condemns previous philosophers for ignoring in their psychological investigations the fact of consciousness, which is the distinctive feature of man, and confining their observation to the so-called "states of the mind." Consciousness comes into manifestation only when the man has used the word "I" with full knowledge of what it means. This notion he must originate within himself. Consciousness cannot spring from the states which are its object, for it is in antagonism to them. It originates in the will, which in the act of consciousness puts the "I" in the place of our sensations. Morality, conscience, and responsibility are necessary results of consciousness. These articles were succeeded by a number of others, of which the most important were The Crisis of Modern Speculation (1841), Berkeley and Idealism (1842), and an important examination of Hamilton's edition of Reid (1847), which contains a vigorous attack on the philosophy of common sense. The perception of matter is pronounced to be the ne plus ultra of thought, and Reid, for presuming to analyse it, is declared to be a representationist in fact, although he professed to be an intuitionist. A distinction is made between the "perception of matter" and "our apprehension of the perception of matter." Psychology vainly tries to analyse the former. Metaphysic shows the latter alone to be analysable, and separates the subjective element, "our apprehension," from the objective element, "the perception of matter," - not matter per se, but the perception of matter is the existence independent of the individual's thought. It cannot, however, be independent of thought. It must belong to some mind, and is therefore the property of the Divine Mind. There, he thinks, is an indestructible foundation for the a priori argument for the existence of God.
Ferrier's matured philosophical doctrines find expression in the Institutes of Metaphysics (1854), in which he claims to have met the twofold obligation resting on every system of philosophy, that it should be reasoned and true. His method is that of Spinoza, strict demonstration, or at least an attempt at it. All the errors of natural thinking and psychology must fall under one or other of three topics: - Knowing and the Known, Ignorance, and Being. These are all-comprehensive, and are therefore the departments into which philosophy is divided, for the sole end of philosophy is to correct the inadvertencies of ordinary thinking.
The problems of knowing and the known are treated in the "Epistemology or Theory of Knowing." The truth that "along with whatever any intelligence knows it must, as the ground or condition of its knowledge, have some cognizance of itself," is the basis of the whole philosophical system. Object+subject, thing+me, is the only possible knowable. This leads to the conclusion that the only independent universe which any mind can think of is the universe in synthesis with some other mind or ego. The leading contradiction which is corrected in the "Agnoiology or Theory of Ignorance" is this: that there can be an ignorance of that of which there can be no knowledge. Ignorance is a defect. But there is no defect in not knowing what cannot be known by any intelligence (e.g. that two and two make five), and therefore there can be an ignorance only of that of which there can be a knowledge, i.e. of some-object-plus-some-subject. The knowable alone is the ignorable. Ferrier lays special :;laim to originality for this division of the Institutes. The "Ontology or Theory of Being" forms the third and final division. It contains a discussion of the origin of knowledge, in which Ferrier traces all the perplexities and errors of philosophers to the assumption of the absolute existence of matter. The conclusion arrived at is that the only true real and indep endent existences are minds-together-with-that-which-theyapprehend, and that the one strictly necessary absolute existence is a supreme and infinite and everlasting mind in synthesis with all things.
Ferrier's works are remarkable for an unusual charm and simplicity of style. These qualities are especially noticeable in the Lectures on Greek Philosophy, one of the best introductions on the subject in the English language. A complete edition of his philosophical writings was published in 1875, with a memoir by E. L. Lushington; see also monograph by E. S. Haldane in the Famous Scots Series.
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