ONE:How far Plotinus was indebted to Ammonius Saccas for his speculative ideas is another question with respect to which the Pythagoreanising tendencies of his biographer may282 possibly have contributed to the diffusion of a serious misconception. What Porphyry tells us is this. Before leaving Alexandria, Plotinus had bound himself by a mutual agreement with two of his fellow-pupils, Herennius and Origines (not the Christian Father, but a pagan philosopher of the same age and name), to keep secret what they had learned by listening to the lectures of Ammonius. Herennius, however, soon broke the compact, and Origines followed his example. Plotinus then considered that the engagement was at an end, and used the results of his studies under Ammonius as the basis of his conversational lectures in Rome, the substance of which, we are left to suppose, was subsequently embodied in his published writings. But, as Zeller has pointed out, this whole story bears a suspicious resemblance to what is related of the early Pythagorean school. There also the doctrines of the master were regarded by his disciples as a mystery which they pledged themselves to keep secret, and were only divulged through the infidelity of one among their number, Philolaus. And the same critic proves by a careful examination of what are known to have been the opinions of Origines and Longinus, both fellow-pupils of Plotinus, that they differed from him on some points of essential importance to his system. We cannot, therefore, suppose that these points were included in the teaching of their common master, Ammonius.425 But if this be so, it follows that Plotinus was the real founder of the Neo-Platonic school; and, in all cases, his writings remain the great source whence our knowledge of its first principles is derived.
TWO:On the other hand, this substitution of the social for the personal integer involves a corresponding change in the398 valuation of individual happiness. What the passions had been to later Greek philosophy, that the individual soul became to Hobbes, something essentially infinite and insatiable, whose desires grow as they are gratified, whose happiness, if such it can be called, is not a condition of stable repose but of perpetual movement and unrest.556 Here, again, the analogy between physics and ethics obtains. In both, there was an original opposition between the idea of a limit and the idea of infinite expansion. Just as, among the earlier Greek thinkers, there was a physical philosophy of the infinite or, as its impugners called it, the indefinite, so also there was, corresponding to it, a philosophy of the infinite or indefinite in ethics, represented, not indeed by professional moralists, but by rhetoricians and men of the world. Their ideal was not the contented man, but the popular orator or the despot who revels in the consciousness of powerthe ability to satisfy his desires, whatever they may be. And the extreme consequence of this principle is drawn by Platos Callicles when he declares that true happiness consists in nursing ones desires up to the highest point at which they can be freely indulged; while his ideal of character is the superior individual who sets at naught whatever restraints have been devised by a weak and timid majority to protect themselves against him.
