A Beginner's History of Philosophy, Vol. 2: Modern Philosophy

by Herbert Ernest Cushman

Descartes had, however, defined clearly the concept of the substance of matter—the substance with which the natural scientist works. He had accomplished this, to be sure, by destroying the essential distinctions between material things. A “thing” is essentially a substance in which many qualities inhere, e. g. a piece of sugar having whiteness, sweetness, etc. Material substances were alike in that all were essentially extension. All else besides extension in any particular finite thing was a modification of extension. A lump of sugar was essentially the same as a lump of salt in that both were extension; the saltness, sweetness, etc., were secondary. Now this makes the nature of bodies very clear; and Descartes proposed to reduce the substance of the states of mind to the same clearness, but he did not do it. He was interested in natural science and he developed his rationalism only with reference to matter. Bodies are parts of space or corpuscles, which are mathematically infinitely divisible, but perceptually are not further divisible. As far as he went, Descartes was clear enough.

The Occasionalists and Spinoza represent the second stage in the development of Rationalism. Both tried by making clear the meaning of spiritual substance to define the relationship of God to the material world. Both tried to state the problem in other words, to overcomethe dualism between mind and matter, and to reconstruct the old “world of grace” so that it would be consistent with the new world of science. The Occasionalists, whose chief exponents were Malebranche and Geulincx, we shall dismiss with only a few words, while considerable attention must be given to the teaching of Spinoza. Malebranche tried to do for the mental world what Descartes had done for the world of matter. Since no knowledge is possible except in God, he claimed that the modes of finite minds—our ideas, judgments, imaginations—are alike in essence in being modifications of the universal reason of God. God is so far the “place of minds” as space is the place of bodies. All our ideas participate in God’s reason, and all our volitions are the modifications of the will of the Divine, just as bodies are modifications of extension. What then is the relation, asked Geulincx, between bodily movement and the states of consciousness? Why does my arm move when I wish to move it? By the mediatory power of God. The thought in my mind is the “occasional cause” of the movement of my arm, while God is the true cause of the movement. The movement of the human body is therefore, like the movement of all matter, a continuous miracle caused by an ever watchful Deity, who keeps body and mind in harmony. Spinoza completed his pantheism before Malebranche had prepared the way. He formulated a complete doctrine of substance, conceiving material bodies to be essentially the same in being modes of extension, and mental phenomena to be essentially alike in being modes of thought. But more important was his further teaching that on that account the two series have no relation to each other. That is to say, Spinoza reduced thewhole difficulty to clearness and distinctness by reducing the three substances of Descartes to one. For this reason Spinoza was a more complete Rationalist than Descartes; and he was assisted in this construction of a mathematical Rationalism by two facts: he held himself strictly to the deductive method, and he was free from social and ecclesiastical ties. Spinoza is the truest utterance of his time in its effort to make all things clear; and this is not contradicted by the fact that he had little influence in shaping contemporary thought.

BARUCH DE SPINOZA

(Pollock (Spinoza, His Life and Philosophy, p. xxvi) says that only three of the portraits of Spinoza may reasonably be considered authentic. One is a miniature of the philosopher in the Summer Palace at the Hague; the second is a painting in the Town Museum at the Hague; the third is the one given here, which is an engraving found in copies of the original edition of Spinoza’s Posthumous Works (1677). This portrait seems to be somewhat idealized, but of the three it is the most artistic and lifelike.)

The Historical Place of Spinoza.[29] Spinoza did not get full standing nor was he widely read, until Lessing, one hundred years later, resurrected his teaching and Goethe adopted it. He produced what the Renaissance was striving for, but what the Renaissance could not yet grasp,—the complete logical formulation of its deepest thought. Spinoza produced the only great conception of the world during this period, and it excited the hostility of contemporary Catholics, Protestants, and free-thinkers alike. The product of his thinking was a new systematic scholasticism, which, if the time had been ready for it, would have entirely superseded the mediæval. He succeeded in placing metaphysics upon a scientific and mathematical basis, for his philosophy was not only logical in its content but mathematical in its form. Spinoza’s philosophy is the Renaissance expression of mediæval scholasticism,—the expression of that rationalism that underlies both thethought of the Middle Ages and the Renaissance. It is as if Thomas Aquinas had been transported into the Renaissance, and finding that science would not support and explain dogma, had conformed dogma systematically to the new science. Mathematically science was the new dogma. Spinoza is the last word of mediævalism, although his language is the science of the Renaissance. The utterance of Spinoza sounds strange because, while his thought is mediæval, his expression and form are scientific.

Spinozism had a revival in the eighteenth century.[30] It formed the background of the philosophy of Herder and that of the author of the Wolfenbüttel Fragments. The connection of Lessing and Spinoza was a matter of active controversy at that time. Spinoza was the great influence upon Goethe. In the nineteenth century in England Coleridge reproduced from Spinoza’s Ethics the doctrine of an all-pervading love and reason.

Spinoza strove before everything else for a unitary system, and yet it is interesting to see how much he has been honored from different quarters. Artists, religious devotees, poets, idealists, materialists, and scientists have found in him their truest expression. This is not only because each has found something different, but because his philosophy had actually a many-sided character. His teaching had the advantage of being thoroughly radical. Bad systems of philosophy are impossible, because they are contradictory. While no one knows that any system corresponds to fact, still it is possible that a radical system may have such correspondence.Spinoza’s system is comprehensive, and therefore has struck sympathetic chords in differing thinkers.

The Influences upon Spinoza. 1. His Jewish Training. Spinoza was born a Jew and remained a member of the Synagogue until he was excommunicated at the age of twenty-four. Although he was the original genius who transcends his limitations, his young mind was moulded after the Jewish type. He received the strictly religious training of the Jewish boy in the Jewish academy at Amsterdam, where he learned a trade in connection with his studies. He studied the Talmud, mediæval Jewish philosophy, especially the writings of Maimonides (twelfth century), and the Cabalistic literature. In a Jewish curriculum the classical languages had no place; and mathematics, except arithmetic, was generally overlooked. His early instruction emphasized above everything else the unity and the supremely transcendent, theistic character of God.

However, his separation from the Synagogue at this early age could not but modify his theology. It made him a free Jew. He was no longer under the restraints of Jewish traditions. While he never abandoned his belief in God as a unity, he gave up his belief in the transcendent theistic God of the Hebrew prophets; and he differed from the contemporary Jewish Cabalistic teaching of emanations from God. He seems to have so modified the orthodox Hebrew conception of God that it rather resembles that of the mediæval mystic Christian. Perhaps the influence of Bruno upon his thought may account for its final shape.