2. HIS RELATION TO HIS PREDECESSORS.—The system of Anaxagoras starts from the same point with his predecessors, and is simply another attempt at the solution of the same problem. Like Empedocles and the Atomists so did Anaxagoras most vehemently deny the becoming. “The becoming and departing,”—so runs one of his sayings—“the Greeks hold without foundation, for nothing can ever be said to become or depart; but, since existing things may be compounded together and again divided, we should name the becoming more correctly a combination, and the departing a separation.” From this view, that every thing arose by the mingling of different elements, and departed by the withdrawing of these elements, Anaxagoras, like his predecessors, was obliged to separate matter from the moving power. But though his point of starting was the same, yet was his direction essentially different from that of any previous philosopher. It was clear that neither Empedocles nor Democritus had satisfactorily apprehended the moving power. The mythical energies of love and hate of the one, or the unconscious necessity of the other, explained nothing, and least of all, the design of the becoming in nature. The conception of an activity which could thus work designedly, must, therefore, be brought into the conception of the moving power, and this Anaxagoras accomplished by setting up the idea of a world-forming intelligence (νοῦς), absolutely separated from all matter and working with design. 3. THE PRINCIPLE OF THE νοῦς.—Anaxagoras described this intelligence as free to dispose, unmingled with any thing, the ground of movement, but itself unmoved, every where active, and the most refined and pure of all things. Although these predicates rest partly upon a physical analogy, and do not exhibit purely the conception of immateriality, yet on the other hand does the attribute of thought and of a conscious acting with design admit no doubt to remain of the decided idealistic character of the Anaxagorean principle. Nevertheless, Anaxagoras went no farther than to enunciate his fundamental thought without attempting its complete application. The explanation of this is obvious from the reasons which first led him to adopt his principle. It was only the need of an original cause of motion, to which also might be attributed the capacity to work designedly, which had led him to the idea of an immaterial principle. His νοῦς, therefore, is almost nothing but a mover of matter, and in this function nearly all its activity is expended. Hence the universal complaint of the ancients, especially of Plato and Aristotle, respecting the mechanical character of his doctrine. In Plato’s Phædon Socrates relates that, in the hope of being directed beyond a simple occasioning, or mediate cause, he had turned to the book of Anaxagoras, but had found there only a mechanical instead of a truly teleological explanation of being. And as Plato so also does Aristotle find fault