Belief is the psychological state in which an individual holds a proposition or premise to be true. Belief, knowledge and epistemology The relationship between belief and knowledge is subtle. Believers in a claim typically say that they know that claim. For instance, those who believe that the Sun is a god will report that they know that the Sun is a god. However, the terms belief and knowledge are used differently by philosophers. Epistemology is the philosophical study of knowledge and beli… (More on Belief)