Chapter 5 maps out the relationship between necessity and truth as two foundations of human cognition. A thesis we call ‘simple truth’ is forwarded, arguing that truth is, like necessity, a (nearly) primitive notion. It is the notion of “how things are in the world”. We ask to enforce, however, a strict distinction between knowing what truth is and knowing what the truth is. We all know what truth is, but we all have real problems ascertaining what the truth is in many a given case. Truth deals with what is the case, whereas necessity deals with what must be the case. In tandem, these two fundaments yield a world view, the human world view, that is truly remarkable. The traditional theories of truth—the correspondence theory and the coherence theory—are revisited as theories of justification, rather than theories of truth.