Theosophy is a religious movement established in the United States in the late 19th century. Founded primarily by the Russian Helena Blavatsky and based largely on her writings, it draws heavily from both older European philosophies such as Neoplatonism and Indian religions such as Hinduism and Buddhism. Although many adherents maintain that Theosophy is not a religion, it is variously categorized by religious scholars as both a new religious movement and a form of occultism from within Western esotericism.