Again, we have to remember that the instinctive self, powerful though it be? does not represent the sum total of human possibility. The maximum of man's strength is not reached until all the self's powers, the instinctive and also the rational, are united and set on one objective; for then only is he safe from the insidious inner conflict between natural craving and conscious purpose which saps his energies, and is welded into a complete and harmonious instrument of life, "The source of power," says Dr. Hadfield in "The Spirit," "lies not in instinctive emotion alone, but in instinctive emotion expressed in a way with which the whole man can, for the time being at least, identify himself. Ultimately, this is impossible without the achievement of a harmony of all the instincts _and_ the approval of the reason."[78] Thus we see that any unresolved conflict or divorce between the religious instinct and the intellect will mar the full power of the spiritual life: and that an essential part of the self's readjustment to reality must consist in the uniting of these partners, as intellect and intuition are united in creative art. The noblest music, most satisfying poetry are neither the casual results of uncriticized inspiration nor the deliberate fabrications of the brain, but are born of the perfect fusion of feeling and of thought; for the greatest and most fruitful minds are those which are rich and active on both levels--which are perpetually raising blind impulse to the level of conscious purpose, uniting energy with skill, and thus obtaining the fiery energies of the instinctive life for the highest uses. So too the spiritual life is only seen in its full worth and splendour when the whole man is subdued to it, and one object satisfies the utmost desires of heart and mind. The spiritual impulse must not be allowed to become the centre of a group of specialized feelings, a devotional complex, in opposition to, or at least alienated from, the intellectual and economic life. It must on the contrary brim over, invading every department of the self. When the mind's loftiest and most ideal thought, its conscious vivid aspiration, has been united with the more robust qualities of the natural man; then, and only then, we have the material for the making of a possible saint.