In all of my educational pontificating to students in my classes I find myself going back to ARISTOTLE when he addressed the topic of Truth. A simple straight forward approach that we all can use today:
1) NATURALISTICALLY, these are all qualities that a person is born with innate.
2) BIOLOGICALLY, in studying body composition and fluids one is able to find out truth.
3) MATHEMATICALLY, by using calculations and numbers one can find out truth.
4) ECLECTICALLY, using all of the above to find the nature of TRUTH. All TRUTH starts with you and ends with you.