Then if a person were to remark that A is taller by a head than B, and B less by a head than A, you would refuse to 101 admit his statement, and would stoutly contend that what you mean is only that the greater is greater by, and by reason of, greatness, and the less is less only by, and by reason of, smallness; and thus you would avoid the danger of saying that the greater is greater and the less less by the measure of the head, which is the same in both, and would also avoid the monstrous absurdity of supposing that the greater man is greater by reason of the head, which is small. You would be afraid to draw such an inference, would you not? Indeed, I should, said Cebes, laughing. In like manner you would be afraid to say that ten exceeded eight by, and by reason of, two; but would say by, and by reason of, number; or you would say that two cubits exceed one cubit not by a half, but by magnitude?—for there is the same liability to error in all these cases. Very true, he said. Again, would you not be cautious of affirming that the addition of one to one, or the division of one, is the cause of two? And you would loudly asseverate that you know of no way in which anything comes into existence except by participation in its own proper essence, and consequently, as far as you know, the only cause of two is the participation in duality—this is the way to make two, and the participation in one is the way to make one. You would say: I will let alone puzzles of division and addition—wiser heads than mine may answer them; inexperienced as I am, and ready to start, as the proverb says, at my own shadow, I cannot afford to give up the sure ground of a principle. And if any one assails you there, you would not mind him, or answer him, until you had seen whether the consequences which follow agree with one another or not, and when you are further required to give an explanation of this principle, you would go on to assume a higher principle, and a higher, until you found a resting-place in the best of the higher; but you would not confuse the principle and the consequences in your reasoning, like the Eristics—at least if you wanted to discover real existence. Not that this confusion signifies to them, who never care or think about the matter at all, for they have the wit to be well pleased with themselves however great may be the turmoil of their ideas. But you, if you are 102 a philosopher, will certainly do as I say. [Sidenote: _The effect of the argument on the company._] What you say is most true, said Simmias and Cebes, both speaking at once. _Ech._ Yes, Phaedo; and I do not wonder at their assenting. Any one who has the least sense will acknowledge the wonderful clearness of Socrates’ reasoning.