This chapter shows how al-Kindī interweaves ideas from Greek cosmology to give a theory that can explain the efficacy of astrology and how God’s providence is dispersed by means of heavenly influence. A concrete example is found in al-Kindī’s works on meteorology, since he thinks that weather is produced by celestial causation. The mechanics of this causation are explained differently in different works, which leads to a consideration of the authenticity of On Rays, which is ascribed to al-Kindī, and its place in his corpus. Finally, the chapter considers whether al-Kindī’s account commits him to determinism, and whether he thinks universal causal determinism is compatible with human freedom.
Keywords: astrology, cosmology, providence, meteorology, determinism, freedom