“And so he would now study perfumes, and the secrets of their manufacture, distilling heavily-scented oils, and burning odorous gums from the East. He saw that there was no mood of the mind that had not its counterpart in the sensuous life, and set himself to discover their true relations, wondering what there was in frankincense that made one mystical, and in ambergris that stirred one’s passions, and in violets that woke the memory of dead romances, and in musk that troubled the brain, and in champak that stained the imagination; and seeking often to elaborate a real psychology of perfumes, and to estimate the several influences of sweet-smelling roots, and scented pollen-laden flower, of aromatic balms, and of dark and fragrant woods, of spikenard that sickens, of hovenia that makes men mad, and of aloes that are said to be able to expel melancholy from the soul.”