"Sometimes we need bread, sometimes wine, sometimes a tonic or a hormone injection, sometimes the stimulation of a colour, sometimes the magic of a sound which goes in at our ears as a vibration and reaches our brains in the form of inspiration. ...[T]here is something through which material and spiritual energy hold together and are complementary. ...[T]here must be a single energy operating in the world. ...[T]he 'soul' must be ...a focal point of transformation ...[F]orces of bodies converge, to become interiorised and sublimated in beauty and truth. ...Yet, ...direct transformation of one of these two energies into the other... has to be abandoned. As... we try to couple them... their mutual independence becomes as clear as their interrelation."