5. Christian theology may have some of its content supplied by philosophy (Georg W. F. Hegel 1770–1831). With Hegel Christian truths were subordinated to and absorbed into idealistic philosophy. In section III of this chapter we will relate the discussion of worldviews especially to the second and third views set forth by Erickson. Julian Victor Langmead Casserley (1909–78) set forth four different but legitimate definitions of the term “natural theology.”2