   The soul is individuated by the particular nature of its designated body, which it strives to bring to moral and intellectual perfection. Being essentially immaterial, the soul does not perish with the body, and even retains its individuality, i.e., the images and intelligible ideas it amassed during its sojourn on  earth.[24] Avicenna attributes self-consciousness to the soul, an ego that has self-awareness and is not to be identified unilaterally with the rational faculty (Rahman 1952, 66). Depending primarily on the amount of knowledge it accumulated, but also on the life the person lived, with its virtues or vices, the immortal soul experiences continuous pleasure or  pain.[25]