His approach- known as logical problem of evil. Australian philospher. Formulated the 'inconsistant triad'. Said logically inconsistant for the 3 statements to exist stimulaneously- god is omnipotent, god is omnibenevolent, evil exists. If you group any 2 of the statements of the traingle it negates the 3rd. Could'nt be a all-powerful,all-loving god if he was, hed stop suffering