Christianity and Hellenistic philosophies experienced complex interactions during the first to the fourth centuries. As Christianity spread throughout the Hellenic world, an increasing number of church leaders were educated in Greek philosophy. The dominant philosophical traditions of the Greco-Roman world then were Stoicism, Platonism, Epicureanism, and, to a lesser extent, the skeptic traditions of Pyrrhonism and Academic Skepticism. Stoicism and, particularly, Platonism were readily incorporated into Christian ethics and Christian theology.