There are some systems built over time that have a certain modularity in them, a pluggability. An essence, that can be extended upon, drawn on at any time, "bootstrapped" so to speak, with common assumptions and observations and beliefs. The Chinese systems of politics, philosophy, religion, medicine, health, divination, and astrology all share a single thread; they are observations of change. The study of how change changes, or what the process of change entails, has been mystifying human beings since the beginning of time.
While there are many ways to talk about who we are and what opinions we have about any particular subject, it seems a bit tricky to be objective about one's self in light of how we feel or what we think.