This is the whole history of man. Finer and finer becomes the veil, more and more of the light behind shines forth, for it is its nature to shine. It cannot be known; in vain we try to know it. Were it knowable, it would not be what it is, for it is the eternal subject. Knowledge is a limitation, knowledge is objectifying. He is the eternal subject of everything, the eternal witness in this universe, your own Self. Knowledge is, as it were, a lower step, a degeneration. We are that eternal subject already; how can we know it? It is the real nature of every man, and he is struggling to express it in various ways; otherwise, why are there so many ethical codes? Where is the explanation of all ethics? One idea stands out as the centre of all ethical systems, expressed in various forms, namely, doing good to others. The guiding motive of mankind should be charity towards men, charity towards all animals. But these are all various expressions of that eternal truth that, "I am the universe; this universe is one." Or else, where is the reason? Why should I do good to my fellowmen? Why should I do good to others? What compels me? It is sympathy, the feeling of sameness everywhere. The hardest hearts feel sympathy for other beings sometimes.