No earnest, conscientious teacher should neglect to explain to those entrusted to him the essential nature of the laws which for centuries, by a kind of natural necessity, have developed themselves in the forms of instrumental music. They are so simple that their principal features may be made clear to the most childish comprehension, and every step in advance will bring with it a deeper insight. That Beethoven, in the closest relation to his great predecessors, submitted to these laws, makes his appearance doubly great: he did not come to destroy, but to fulfil the law. O that our art, the most spiritual of all, were not bound by so many and such rigorous ties to matter! O that Beethoven's sonatas were within the reach of all educated minds, like the lyrics of our great poets! But not this alone does Nature deny to our art; she withholds from the greater number of those even who are striving as musicians and as pianists the full enjoyment of these lofty works, at least in their totality. They make demands upon the executants which are not easily met. Here and there we find the necessary talent. Were it but accompanied by the indispensable earnestness and diligence! Beethoven's pianoforte music demands (apart from the consideration of the extraordinarily difficult works) sound and solid execution. The first conditions of this are also the rarest, viz., a powerful and yet gentle touch, with the greatest possible independence of finger. Beethoven never writes difficulties merely to win laurels for those executants who shall overcome them, but neither is he deterred by any technical inconvenience, if it be necessary to give firm and clear expression to an idea. Thus we meet, in works reckoned amongst the easiest, with passages which presuppose a pretty high degree of technical skill; and since a pure style properly demands that there shall be at least the _appearance_ of ease on the part of the performer,--with compositions of the intellectual depth of Beethoven's this is an indispensable qualification. Therefore it is not advisable to take or place the sonatas of our master in hands which are not educated for their reception. When that degree of progress has been attained which will insure the mastery of the technical difficulties, the enjoyment and advantage to be derived from their thorough study will be doubled, and the effort to grasp them intellectually unhindered.