Hume argues that there are only two cases where passion or a motive can be unreasonable. Specifically, when passion accepts something that is non-existent, or when a person is misguided about the significant means for an object. Hume defines passion as impressions that normally result from experiences of pleasure and pain. Hume argues that passion is what controls human behavior rather than reason. Reason is how we make sense of things. Hume divides reasoning into two parts: demonstrative reasoning and causal reasoning. Demonstrative reasoning is abstract relations among different ideas. Causal reasoning are the relations among objects that we get from experience. Lastly, the will is defined in Humes Treatise, book 2, part 3, section 1 as "the