Through psychology we have the fact to which all other facts are relative. Psychology is based on the rational soul framework, where we can explore concepts such as motivation, personality, perception, and so on. Epistemology is therefore the theory of knowledge. Epistemology leads us to question knowledge, what it is and how knowledge can be achieved or how a person can acquire knowledge. In epistemology, we often link knowledge to truth. We can often ask ourselves: how do we know that something represents the truth? According to Plato and his theory of knowledge, to know whether something is true, we should not just believe the true proposition, but rather we should have a good reason to know what the truth is. In other words, believing that something is true is not sufficient for something to gain knowledge. I think in epistemology we should describe knowledge based on a system of justified truth. The third approach is metaphysics. The latter is a theory that is based on existence and reality. Metaphysics leads us to ask questions like: how can we say that this thing or object exists? And what is it? I think metaphysics is a relevant theory when talking about God or some kind of deity that we cannot see, hear or touch, but we claim exists. For example, metaphysics