Avicenna has presented some divisions of happiness: at the first he defines it as favorite thing per se (intrinsically), and goal in itself. He divides also happiness in one respect into two kinds; the first one is happiness in relation to different powers of soul, and the other is happiness in relation to soul itself. From the other viewpoint he divides happiness into bodily and spiritual and believes that spiritual happiness is original. He also divides happiness into absolute and restricted and maintains that we are not able to attain absolute happiness and adversity in this world.
By the way, we should mention that although Ibn Sina asserted in his various writings, differently about criteria of acquisition to great happiness, there are sympathy between them and this ideas could understand essentially in the same meaning. He believes that final happiness and prosperity could not be drivable in this world.
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