Summa Perfectionis, "The Height of Perfection," is attributed to Abu Musa Jabir ibn Hayyan (c. 721-815), who is most commonly known as Geber. This volume was selected by Hans Nintzel for inclusion in the R.A.M.S. Library due to numerous references to the text in major Alchemical works. Whatever the origin, this text has had a strong influence on the study of Alchemy for many centuries.