Mysticism (From myein, to initiate). According to its etymology, implies a relation to mystery. In philosophy, Mysticism is either a religious tendency and desire of the human soul towards an intimate union with the Divinity, or a system growing out of such a tendency and desire. As a philosophical system, Mysticism considers as the end of philosophy the direct union of the human soul with the Divinity through contemplation and love, and attempts to determine the processes and the means of realizing this end. This contemplation, according to Mysticism, is not based on a merely analogical knowledge of the Infinite, but as a direct and immediate intuition of the Infinite. According to its tendency, it may be either speculative or practical, as it limits itself to mere knowledge or traces duties for action and life; contemplative or affective, according as it emphasizes the part of intelligence or the part of the will; orthodox or heterodox, according as it agrees with or opposes the Catholic teaching. We shall give a brief historical sketch of Mysticism and its influence on philosophy, and present a criticism of it. HISTORICAL SKETCH In his "History of Philosophy", Cousin mentions four systems, between which, he says, philosophical thought has continually wavered, viz., Sensism, Idealism, Scepticism, and Mysticism. Whatever may be thought of this classification, it is true that Mysticism has exercised a large influence on philosophy, becoming at times the basis of whole systems, but more often entering as an element into their constitution. Mysticism dominated in the symbolic philosophy of ancient Egypt. The Taoism of the Chinese philosopher Lao-tze is a system of metaphysics and ethics in which Mysticism is a fundamental element (cf. De Harlez, "Laotze, le premier philosophe chinois", in "Memoires couronnes et autres de l'Academie", Brussels, January, 1886). The same may be said of Indian philosophy; the end of human reflection and effort in Brahmanism and Vedantism is to deliver the soul from its transmigrations and absorb it into Brahma forever. There is little of Mysticism in the first schools of Greek philosophy, but it already takes a large place in the system of Plato, e.g., in his theory of the world of ideas, of the origin of the world soul and the human soul, in his doctrine of recollection and intuition. The Alexandrian Jew Philo (30 B.C-A.D. 50) combined these Platonic elements with the data of the Old Testament, and taught that every man, by freeing himself from matter and receiving illumination from God, may reach the mystical, ecstatic, or prophetical state, where he is absorbed into the Divinity. The most systematic attempt at a philosophical system of a mystical character was that of the Neoplatonic School of Alexandria, especially of Plotinus (A.D. 205-70) in his "Enneads". His system is a syncretism of the previous philosophies on the basis of Mysticism--an emanative and pantheistic Monism. Above all being, there is the One absolutely indetermined, the absolutely Good. From it come forth through successive emanations intelligence (nous) with its ideas, the world-soul with its plastic forces (logoi spermatikoi), matter inactive, and the principle of imperfection. The human soul had its existence in the world-soul until it was united with matter. The end of human life and of philosophy is to realize the mystical return of the soul to God. Freeing itself from the sensuous world by purification (katharsis), the human soul ascends by successive steps through the various degrees of the metaphysical order, until it unites itself in a confused and unconscious contemplation to the One, and sinks into it: it is the state of ecstasis. With Christianity, the history of Mysticism enters into a new period. The Fathers recognized indeed the partial truth of the pagan system, but they pointed out also its fundamental errors. They made a distinction between reason and faith, philosophy and theology; they acknowledged the aspirations of the soul, but, at the same time, they emphasized its essential inability to penetrate the mysteries of Divine life. They taught that the vision of God is the work of grace and the reward of eternal life; in the present life only a few souls, by a special grace, can reach it. On these principles, the Christian school of Alexandria opposed the true gnosis based on grace and faith to the Gnostic heresies. St. Augustine teaches indeed that we know the essences of things in rationibus aeternis, but this knowledge has its