 Even without presenting the entire list, it is obvious that al-Farabi refers to the same issues as those detailed in his Perfect State (see  section 2.2  above). However, while the Perfect State employed a terminology reminiscent of philosophical jargon, the Book of Religion falls back on religious terms. Instead of the first cause, it speaks of God; instead of cosmology, it refers to theology; instead of the separate intellects, it evokes angels and demons as spiritual beings. The same kind of shift can be observed in connection with the activities the excellent religion determines (law):