Tables of Contents.- I General.- I Introduction.- II Three neoaristotelian and neoplatonic concepts: mono- psychism, mysticism, metaconsciousness.- III Three Averroistic problems.- 1 Collective immortality and collective perfection in Averroes and Dante.- 2 Ecstatic conjunction, death, and immortality in the individual.- 3 The double truth theory and the problem of personal immortality in Averroes.- IV Collective consciousness, double consciousness, and metaconsciousness (unconscious consciousness) in Kant and some post-Kantians.- V Select bibliography of translations of philosophical works by al-Kind?, al-F?r?b?, Avicenna, ibn-B???a, and Averroes.- VI Index of names.