How did Gottfried Wilhelm Leibniz respond to the problem of evil in Theodicy?

In his 1710 work Theodicy, Gottfried Wilhelm Leibniz addressed the problem of evil by proposing that the existing world is the "best of all possible worlds."12

Leibniz argued that God, being omnipotent, omniscient, and omnibenevolent, surveyed an infinite number of possible worlds before creation. Because God acts according to a sufficient reason, he chose to create the world that contains the greatest possible number of compatible perfections.12

Leibniz categorized evil into three types: moral, physical, and metaphysical. He contended that what appears to be evil is often a necessary component of a greater good, using the analogy of a painting where dark patches are required to enhance the beauty of the overall composition. Furthermore, he suggested that the interconnectedness of events means that removing specific evils might result in even greater evils, and that our perception of "evil" may simply differ from a divine standard of goodness. Through this framework, Leibniz sought to justify the existence of evil as a logical consequence of creating the most perfect world possible.21