People's emotions are not reliable in the pursuit of knowledge. When making decisions, people naturally turn to their emotions to help them. Emotions are not only physical, but also cognitive. Physically, emotions can be shown by facial expression and body language. For example, someone who is sad may have a frowning expression and may be hunched over. People's emotions are influenced by their beliefs, and emotions influence their beliefs because of the cognitive side of emotions. The cognitive qualities of emotions are innate, meaning they are not learned. The mental aspect of emotions can change due to a person's beliefs. This means that if someone's beliefs changed, there could be a change in the corresponding emotion as well. An example of this is that someone might feel fear because they will have a history test in their next period. They believe the test will be difficult and fear failure. Once the test is passed and the person sees that it is not as difficult as he thought, his fear disappears. This shows that the change in belief can change the corresponding emotion. There are multiple reasons why emotions cannot always be trusted in the pursuit of knowledge. Passion plays an important role in emotions. When a person is very passionate about something, they tend to argue their beliefs more strongly and not listen to counterclaims. For example, two very passionate athletes might argue about which sport is better. The soccer player will argue forcefully why soccer is so much better, while the basketball player will do the same for basketball. Neither will listen to counterclaims due to their strong passion for their sport. Their emotions take over and do not allow them to listen to the opposing argument. People... in the middle of the paper... just one person instead. Using reason, the person might come to the conclusion that one death is better than five, but emotions also play a role in this decision. Having to interact in the situation can change the person's decision and outlook on the situation. When seeking knowledge, emotions cause humans to have the energy to take part in intellectual activities. Beyond that, emotions give people the potential to discover new ideas. Those who have passion in their work are more motivated and for this reason are able to acquire more knowledge. Emotions can be a source of knowledge for some things that reason cannot demonstrate. Reason can only take people so far, until emotion is needed, such as making a decision between two rational options. All in all, there are arguments showing that emotions are reliable in the pursuit of knowledge and can be a source of knowledge.