A first kind of truth is “belief”.  Saying that we "know" something can mean many things. Most people in Europe, for instance, say they believe in God. Few claim to have direct contact with God, but they say they believe all the same. We call this kind of knowing "belief" or "faith." A second kind of truth comes from recognized experts. Students with a health problem, for example, may consult a physician or search the Internet for articles written by experts in the field. A third type of truth is based on simple agreement among ordinary people. Most of us in Europe would say we "know" that sexual relation among adult and teenager is wrong. But why? Mostly because just about everyone says it is. People's "truths" differ the world over, and we often encounter "facts" at odds with our own.