David Hume
In his books on philosophy, Hume said that many of our beliefs do not come from reason. Instead, they come from our instincts or feelings. For example, reason does not tell us that one thing causes another. Instead, we see one thing and then we see another, and we feel a link between the two. Similarly, reason does not tell us that someone is a good person. Instead, we see that the person is kind and friendly, and we feel a special moral feeling. Because Hume thought that these beliefs do not come from reason, people call him a "skeptical" or "anti-rationalist" philosopher.