This type of "trilemma" argument (God is omnipotent, God is good, but Evil exists) was one favoured by the ancient Greek skeptics, and this argument may have been wrongly attributed to Epicurus by Lactantius, who, from his Christian perspective, regarded Epicurus as an atheist. According to Reinhold F. Glei, it is settled that the argument of theodicy is from an academical source which is not only not Epicurean, but even anti-Epicurean. The earliest extant version of this "trilemma" appears in the writings of the Pyrrhonist philosopher Sextus Empiricus.