 The answer (according to Leibniz) is that, while God is indeed unlimited in wisdom and power, his human creations, as creations, are limited both in their wisdom and in their will (power to act).This predisposes humans to false beliefs, wrong decisions, and ineffective actions in the exercise of their free will.God does not arbitrarily inflict pain and suffering on humans; rather he permits both "moral evil" (sin) and "physical evil" (pain and suffering) as the necessary consequences of "metaphysical evil" (imperfection), as a means by which humans can identify and correct their erroneous decisions, and as a contrast to true good.