==ETERNITY OF THE SOUL==

WHEN MUSLIM PHILOSOPHERS ASSERT THAT THE SOUL COMES INTO EXISTENCE SIMULTANEOUSLY WITH THE COMING INTO EXISTENCE OF THE BODY, SOME, SUCH AS IBN SINA (§6), WHO BELIEVE THAT THE RATIONAL SOUL IS IN ESSENCE NON­MATERIAL, ARE THINKING ONLY OF THE NON-RATIONAL SOUL. OTHERS, SUCH AS IBN RUSHD (§3), WHO BELIEVE THAT THE RATIONAL SOUL IS ORIGINALLY NOT SEPARATE FROM MATTER, CONTEND THAT THE WHOLE HUMAN SOUL COMES INTO EXISTENCE. THE LATTER BELIEVE THAT SINCE THE RATIONAL SOUL GRASPS THE UNIVERSALS FROM PARTICULAR SENSIBLES, AND SINCE SUCH SENSIBLES ARE MATERIAL AND HAVE A TEMPORAL BEGINNING, THIS SOUL MUST ALSO BE MATERIAL AND MUST HAVE A TEMPORAL BEGINNING. THOSE WHO ATTRIBUTE NON-MATERIALITY TO THE ESSENCE OF THE RATIONAL SOUL, SUCH AS AL-KINDI AND IBN SINA, ASSERT THAT THIS SOUL PRE-EXISTS THE BODY. WHILE ALL OF THEM AGREE THAT THE NON-RATIONAL SOUL IS DESTROYED AFTER THE DESTRUC­TION OF THE BODY, THEY DIFFER WITH REGARD TO THE END OF THE RATIONAL SOUL.
AL-KINDI AND IBN SINA, FOR EXAMPLE, STRONGLY ADHERE TO THE VIEW THAT ALL RATIONAL SOULS ARE INDESTRUCTIBLE BECAUSE BY NATURE THEY ARE SIMPLE. AL-FARABI REMINDS US THAT THE REASON FOR ETERNAL EXISTENCE IS THE RATIONAL SOUL’S KNOWLEDGE OF THE ETERNAL ASPECTS OF THE UNIVERSE. FROM THIS HE DRAWS THE CONCLUSION, AS DID ALEXANDER OF APHRODISIAS BEFORE HIM, THAT ONLY THOSE RATIONAL SOULS THAT HAVE THIS KNOWLEDGE AT THEIR SEPARATION FROM THE BODY ARE INDESTRUCTIBLE. OTHER RATIONAL SOULS ARE EVENTUALLY DESTROYED. IBN SINA FINDS IN THE GRASPING OF THE UNIVERSALS THE GROUNDS FOR HAPPINESS, NOT THE ETERNITY OF THE SOUL. IBN RUSHD SEEMS TO HOLD THAT ONLY THE ACQUIRED INTELLECT CAN BE INDESTRUCTIBLE; BUT THE ACQUIRED INTELLECT, HE ARGUES (AS DOES HIS TEACHER IBN BAJJA), IS DIVINE AND NUMERICALLY ONE IN ALL. IBN RUSHD WAS ATTACKED FOR THIS VIEW BECAUSE IT DENIES ETERNAL EXISTENCE OF INDIVIDUAL SOULS (SEE AVERROISM; SOUL, NATURE AND IMMORTALITY OF THE).