But the one whose heart is open - he need not go as far as the forest; in the midst of the crowd he can find music. At this time human ideas are so changed, owing to materialism, that there is no distinction of personality. But if one studies human nature one finds that even a piano of a thousand octaves cannot produce the variety that human nature represents: how people agree with one another, how they disagree; some become friends after a contact of one moment, and some in thousand years cannot become friends. If one could only see to what pitch the different souls are tuned, in what octave different people speak, what standard different people have! Sometimes there are two persons who disagree, and there comes a third person and all unite together. Is this not the nature of music? The more one studies the harmony of music, and then studies human nature - how people agree, and how they disagree, how there is attraction and repulsion - the more one sees that it is all music.