Problem of evil

The problem of evil is the question of how to reconcile the existence of evil and suffering with an omnipotent, omnibenevolent, and omniscient God. There are currently differing definitions of these concepts. The best known presentation of the problem is attributed to the Greek philosopher Epicurus. It was popularized by David Hume.

Besides the philosophy of religion, the problem of evil is also important to the fields of theology and ethics. There are also many discussions of evil and associated problems in other philosophical fields, such as secular ethics, and evolutionary ethics. But as usually understood, the problem of evil is posed in a theological context.

Responses to the problem of evil have traditionally been in three types: refutations, defenses, and theodicies.

The problem of evil is generally formulated in two forms: the logical problem of evil and the evidential problem of evil. The logical form of the argument tries to show a logical impossibility in the coexistence of a god and evil, while the evidential form tries to show that given the evil in the world, it is improbable that there is an omnipotent, omniscient, and a wholly good god. The problem of evil has been extended to non-human life forms, to include suffering of non-human animal species from natural evils and human cruelty against them.