 During this later phase of his life, Schopenhauer wrote a short work in 1836, Über den Willen in der Natur (On the Will in Nature), that aimed to confirm and reiterate his metaphysical views in light of scientific evidence. Featured in this work are chapters on animal magnetism and magic, along with Sinology (Chinese studies). The former reveals Schopenhauer’s interest in parapsychology; the latter is valuable for its references to the preeminent Neo-Confucian scholar, Zhu Xi (1130-1200), as well as to influential writers on Asian thought from the period such as Robert Spence Hardy (1803–1868) and Isaac Jacob Schmidt (1779–1847).