_I._--No doubt. _He._--And you hope that these masters will know the grammar, the fables, the history, the geography, the morality, in which they will give her lessons? Moonshine, my dear mentor, sheer moonshine! If they knew these things well enough to teach them to other people, they never would teach them? _I._--And why? _He._--Because they would have spent all their lives in studying them. It is necessary to be profound in art and science, to know its elements thoroughly. Classical books can only be well done by those who have grown gray in harness; it is the middle and the end which light up the darkness of the beginning. Ask your friend D'Alembert, the coryphaeus of mathematics, if he thinks himself too good to write about the elements. It was not till after thirty or forty years of practice that my uncle got a glimpse of the profundities and the first rays of light in musical theory. _I._--O madman, arch-madman, I cried, how comes it that in thine evil head such just ideas go pell-mell with such a mass of extravagances? _He._--Who on earth can find that out? 'Tis chance that flings them to you, and they remain. If you do not know the whole of a thing, you know none of it well; you do not know whither one thing leads, nor whence another has come, where this and that should be placed, which ought to pass the first, and where the second would be best. Can you teach well without method? And method, whence comes that? I vow to you, my dear philosopher, I have a notion that physics will always be a poor science, a drop of water raised by a needle-point from the vast ocean, a grain loosened from an Alpine chain. And then, seeking the reasons of phenomena! In truth, one might every whit as well be ignorant, as know so little and know it so ill; and that was exactly my doctrine when I gave myself out for a music-master. What are you musing over? _I._--I am thinking that all you have told me is more specious than solid. But that is no matter. You taught, you say, accompaniment and composition. _He._--Yes. _I._--And you knew nothing about either. _He._--No, i' faith; and that is why there were worse than I was, namely those who fancied they knew something. At any rate, I did not spoil either the child's taste or its hands. When they passed from me to a good master, if they had learnt nothing, at all events they had nothing to unlearn, and that was always so much time and so much money saved. _I._--What did you do?