1. Philosophers
   1. Original
      1. Avicenna (980-1037)
         1. Argument
      2. Anselm of Canterbury (1033-1109)
         1. Argument
      3. Aquinas (1225-1274)
         1. Argument
            1. The 5 ways- Quinquae viae
      4. al-Din Suhrawardi (1155-1191)
         1. Argument
      5. Descartes (1596-1650)
         1. Argument
   2. Revisionists
      1. Mulla Sadra (1571-1640
         1. Argument
      2. Leibniz
      3. Norman Malcolm
      4. Charles Hartshorne
      5. Kurt Godel
      6. Alvin Plantinga
         1. Argument
2. Philosophers
   1. Western
      1. Gaunilo of Marmoutiers (11th Century)
         1. Counter-Argument
      2. David Hume (1711-1776)
         1. Counter-Argument
      3. Kant (1724-1804)
         1. Counter-Argument
      4. Bertrand Russell (1872-1970)
         1. Counter-Argument
      5. Douglas Gasking (1911-1994)
         1. Counter-Argument
   2. Islamic
      1. Al-Ghazali (1058-1111)
         1. Counter-Argument???
      2. Averroes (1126-1198)
         1. Counter-Argument???
      3. Mulla Sadra (1571-1640)
         1. Counter-Argument