Again, this preference for mythological imagery on the part of the more original and poetical thinker seems to be closely connected with a more vivid interest in the practical duties of life. With Plotinus, the primal beauty or supreme good is something that can be isolated from all other beauty and goodness, something to be perceived and enjoyed in absolute seclusion from one’s fellow-men. God is, indeed, described as the source and cause of all other good. But neither here nor elsewhere is there a hint that we should strive to resemble him by becoming, in our turn, the cause of good to others. Platonic love, on the contrary, first finds its reality and truth in unremitting efforts for the enlightenment and elevation of others, being related to the transmission of spiritual life just as the love inspired by visible beauty is related to the perpetuation and physical ennoblement of the race. This preference of pure abstract speculation to beneficent action may be traced to the influence of Aristotle. Some of the most enthusiastic expressions used by Plotinus in speaking of his supreme principle seem to have been suggested by the _Metaphysics_ and the last book of the _Nicomachean Ethics_. The self-thinking thought of the Stagirite does not, indeed, take the highest rank with him. But it is retained in his system, and is only relegated to a secondary place because, for reasons which we shall explain hereafter, it does not fulfil equally well with Plato’s Idea of Good, the condition of absolute and indivisible unity, without which a first principle could not be conceived by any Greek philosopher. But this apparent return to the standpoint of the _Republic_ really involves a still wider departure from its animating spirit. In other words, Plotinus differs from Aristotle as Aristotle himself had differed from Plato; he shares the same speculative tendency, and carries it to a greater extreme.