[51] [cap.8] And from the same principle as a starting-point it will also be clearly shown that the foolish man is a slave; for as the laws which prevail with respect to music do not give those who are ignorant of it a right of speaking about it in terms of equality with those who are well versed in it; nor do the laws respecting grammar give those ignorant of that knowledge a right of speaking about it on terms of equality with those who are well skilled in it; nor, in short, does the law with respect to any art confer such a right on those who are ignorant of it towards those who are learned in it; so also the law which relates to the establishing proper principles of life does not give those who are strangers to any such true principles a right of speaking freely on such topics to those who have studied and learnt them.