If we hold by our metaphor of the building, then in suppression, bricks which would not go well with the rest are stacked quietly in the cellars; while in repression, part of the workmen want to build a different sort of building, and have to be forcibly held down by some of the rest to prevent their doing so. But in whatever way the subconscious may be organized it is always with us, and there will always be a remainder of our soul, or of its possibilities, which is not incorporated in our personal life at all, as well as much which is not closely organized with the main everyday personality, but is connected with it only by vague and loose bonds, approachable only by narrow pathways instead of by broad roads. There is another process at work in the human mind which is of the utmost importance for our problem. I mean the process of sublimation. If it is not easy to give a short and clear definition of sublimation, at least the process is familiar to all. The commonest example is “falling in love,” where the simple sex-instinct becomes intertwined with other instincts and with past emotional experience, and projects itself in wholly new guise upon its object. We may perhaps best say that a sublimated instinct has more and higher values attached to its satisfaction than one unsublimated. The mere satisfaction of the sexual impulse need be little more than a physiological desirability; but the satisfaction of passionate love involves every fibre of the mental organism, hopes and ideals converging with memories and instincts on to the highest pitch of being. In such a case sublimation occurs with the normal object of the instinct. But the elasticity of man’s mind permits of further complication; the instinct may be not only sublimated but attached to new objects. Through the cogs and spirals of the mind, the sexual instinct may find an outlet at higher levels, and contribute to the driving force of adventurous living, of art, or as we may see in many mystics--St. Teresa for example--of religious ecstasy. It is as if a swift stream were falling into underground channels below the mill of our being, where it could churn and roar away to waste. But some of it is led off at a higher level, and we can learn to lead off still more; and we can make an installation of pipes whereby it can be taken up to the original level, and made to fall through new machines and do any work we may ask of it. The mechanism of sublimation, however, deserves a few more words. Recent work in biology has shown that in low forms of animals and in early stages of high forms, the head-region is in a certain sense dominant to the rest, in that it forms first and independently; but that, once present, it exerts a formative influence upon the rest of the body, keeping the various organs in some way under control, making them different from what they would otherwise have been, and so moulding them to the part of a single and higher whole.