THREE:The second thesis of Gorgias was that, even granting the world to exist, it could not possibly be known. Here the reasoning is unexpectedly weak. Because all thoughts do not represent facts,as, for example, our ideas of impossible combinations, like chariots running over the sea,it is assumed that none do. But the problem how to distinguish between true and false ideas was raised, and it was round this that the fiercest battle between dogmatists and sceptics subsequently raged. And in the complete convertibility of consciousness and reality postulated by Gorgias, we may find the suggestion of a point sometimes overlooked in the automatist controversynamely, that the impossibility, if any, of our acting on the material world reciprocally involves the impossibility of its acting on us, in so far as we are conscious beings. If thought cannot be translated into movement, neither can movement be translated into thought.For compasses, the lead points should be cylindrical, and fit into a metal sheath without paper packing or other contrivance to hold them; and if a draughtsman has instruments not arranged in this manner, he should have them changed at once, both for convenience and economy.
