G.W.F. Hegel, "Lectures on the Philosophy of Religion"

"Evil first occurs within the sphere of rupture or cleavage; it is the consciousness of being-for-myself in opposition to an external nature, but also in opposition to the objective that is inwardly universal in the sense of the concept or of the rational will. It is through this separation that I exist for myself for the first time, and that is where the evil lies. Abstractly, being evil means singularizing myself in a way that cuts me off from the universal (which is the rational, the laws, the determinations of spirit). But along with this separation there arises being-for-self and for the first time the universally spiritual laws— what ought to be. So it is not the case that reflection has an external relationship to evil: it is itself what is evil. Inasmuch as it is spirit, humanity has to progress to this antithesis of being-for-self as such…Spirit is free; freedom has the essential moment of this separation within itself. In this separation being-for-self is posited and evil has its seat; here is the source of all wrong, but also the point where reconciliation has its ultimate source. It is what produces the disease and is at the same time the source of health."

Elucidation of the Previous Excerpt

Michelangelo di Lodovico Buonarroti Simoni, "The Torment of St. Anthony," 1487-1488