The Blavatsky Lecture: Matter Is Spirit is a book written by E.L. Gardner. The book is a collection of lectures given by the author on the subject of spirituality and the nature of matter. The lectures are based on the teachings of Helena Petrovna Blavatsky, a Russian philosopher and spiritualist who founded the Theosophical Society in the late 19th century.The book explores the idea that matter and spirit are not separate entities, but rather two...