Add to ORKGThis paper is a study of John Locke’s process of reasoning, defined as the investigation and discovery of the agreement or disagreement existing among ideas. Reason has four principal duties to fulfill which include: First, the highest goal of reason is the discovery of truths such as the existence of an eternal being. Second, in understanding, reasoning eases the arrangement of ideas in order to portray and facilitate the agreement or disagreement among them. Third, reasoning perceives the connection of ideas in mental propositions. The fourth and final role of reason is that, it facilitates the making of right decisions and conclusions. Emphasizing on these four main functions of reason guarantees the basic objective of understanding whic...