INTEREST AND EFFORT
takes us back to the consideration of impulse and the spontaneous urgencies or tendencies of activity. There is no such thing as absolutely diffuse impartial impulse. Impulse is always differentiated along some more or less specific channel. Impulse has its own special lines of discharge. The old puzzle about the ass between two bundles of hay is only too familiar, but the recognition of its fundamental fallacy is not so common. If the self were purely passive or purely indifferent, waiting upon stimulation from without, then the self illustrated in this supposed example would remain forever helpless, starving to death, because of its equipoise between two sources of food. The error lies in assuming any such passive condition. One is always already doing something, intent on something urgent. And this ongoing activity always gives a bent in one direction rather than another. The ass, in other words, is always already moving toward one bundle rather than the other. No amount of physical cross-eyedness could induce such mental cross-eyedness that the animal would be in a condition of equal stimulation from both sides. Wherever
