The Septenary In Nature, Tetraktis, And The Ancient Scriptures is a book written by Katharine Hillard that explores the concept of the septenary, or the number seven, in various aspects of nature, philosophy, and spirituality. The book delves into the history and significance of the tetraktys, a triangular figure consisting of ten points arranged in four rows, which was revered by Pythagoreans as a symbol of the universe and the divine. Hillard also...