Schopenhauer; pessimism, and the positive nature of the evil

Theoretical optimism and pessimism are followed from the determination of the ontological and ethical relationship between the good and the evil of the world, based on special point of view and a priori or a posteriori arguments for it. However Schopenhauer's a priori point of view was the emphasis on the existence of the evil and the negation of the good, thereby he was a pessimistic, he defined the good as coordination between an individual object and a definite effort of the will. Thus, he defined the evil as absence of such coordination. Although Schopenhauer's approach to the problem of the evil subject to his metaphysics of the will and the representation, it is along with the history of philosophy, within Christian tradition, and in a mutual relation with his life and time situations. From the total of the definitions of the suffering and enjoyment (Satisfaction), happiness and virtue, wrong and right, which he gave us, comes it to mind that Schopenhauer tied and linked each of them to the evil and the good. In addition, according to his view, in spite of the irrationality and absurdity of this worst possible world, one can find consolation in the aesthetic contemplation, tear the veil of delusion through compassion, and achieve salvation by denial of the will.