THREE:Machine-drawing may in some respects be said to bear the same relation to mechanics that writing does to literature; persons may copy manuscript, or write from dictation, of what they do not understand; or a mechanical draughtsman may make drawings of a machine he does not understand; but neither such writing or drawing can have any value beyond that of ordinary labour. It is both necessary and expected that a draughtsman shall understand all the various processes of machine construction, and be familiar with the best examples that are furnished by modern practice.Thus we can quite agree with Zeller when he observes435293 that Neo-Platonism only carried out a tendency towards spiritualism which had been already manifesting itself among the later Stoics, and had been still further developed by the Neo-Pythagoreans. But what does this prove? Not what Zeller contends for, which is that Neo-Platonism stands on the same ground with the other post-Aristotelian systems, but simply that a recurrence of the same intellectual conditions was being followed by a recurrence of the same results. Now, as before, materialism was proving its inadequacy to account for the facts of mental experience. Now, as before, morality, after being cut off from physical laws, was seeking a basis in religious or metaphysical ideas. Now, as before, the study of thoughts was succeeding to the study of words, and the methods of popular persuasion were giving place to the methods of dialectical demonstration. Of course, the age of Plotinus was far inferior to the age of Plato in vitality, in genius, and in general enlightenment, notwithstanding the enormous extension which Roman conquest had given to the superficial area of civilisation, as the difference between the Enneads and the Dialogues would alone suffice to prove. But this does not alter the fact that the general direction of their movement proceeds in parallel lines.
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