The goal of this paper is to present and analize some of the main subjects of David Hume’s philosophy. In particular the subjects of naturalism, causality and scepticism. Hume’s naturalism is an attempt to find the general principles of our minds and relations between ideas. Hume wanted to explain the world with the most basic and general ideas, in doing so he believed this would better our understanding of the world and its principles. Continuing with the problem of causality, Hume says that by observing the relation between the cause and effect we are never entitled to say that there exist a necessary connection between the two. The only thing we can say for certain is that the one follows the other and that is all. We often presume that this necessary connection exists but this is due, according to Hume, to our habit that we have developed having seen so many interactions between cause and effect. One of the main critiques of Hume’s view of causality comes from Immanuel Kant. Kant argues that while observing A and B we are already a priori familiar with the necessary connection between A and B. But Kant gives a very different interpretation of causality itself, for Kant causality is a power that ,while active, changes different supstances that it effects. Because of this Kant’s and Hume’s perceptions of causality itself are radically different. This brings us to Hume’s scepticism and his belief that the mind is very limited in perceiving the world. Also, Hume insists that we must have a moderate amount of scepticism towards things that are deserving of our doubts and suspictions.