And then, they relax, they contract. They are driven by the opposite motion from the powerful voluntary center of the thoracic ganglion.. That which was drawn in, was invited, is now relinquished, allowed to go forth, negatively. Not positively dismissed, but relinquished.

There is a wonderful complementary duality between the voluntary and the sympathetic activity on the same plane. But between the two planes, upper and lower, there is a further dualism, still more startling, perhaps. Between the dark, glowing first term of knowledge at the solar plexus: I am I, all is one in me; and the first term of volitional knowledge: I am myself, and these others are not as I am; — there is a world of difference. But when the world changes again, and on the upper plane we realize the wonder of other things, the difference is