The visible actions of people are first shaped by invisible thoughts, deep in the unseen world of the human mind and heart. What factors influence those invisible ideas? For people who live in the Western world, the answers can be found by examining the two major roots of Western thought--the ancient Greeks and the ancient Hebrews. Assumptions That Affect Our Lives takes the reader back to the roots of the modern conflict between Christianity and secular humanism through a comparison of ancient Greek and Hebrew culture. What the reader will discover is, the current tension between evangelical Christians and the non-biblical ideas with which they are surrounded is an age old conflict. By viewing the current situation in the context of the ancient Greeks and Hebrews, contemporary Christians can be better equipped to deal with the challenges of living in a predominately Greek-based culture today.