He planned four additional books: one on the stationary aspects of the universe (the Sun and the fixed stars); one on the planets and their motions; one on the physical nature of planets and the formation of geographical features (focused especially on Earth); and one on the effects of the heavens on the Earth, to include atmospheric optics, meteorology, and astrology.
他计划编写另外4部书籍：一部关于宇宙的静止事物（太阳和固定的星球）；一部关于行星及其运动；一部关于行星的物理属性与地理特征的形成（侧重于地球）；一部是关于天空对地球的影响，涵盖大气光学、气象学和占星术。