The purpose of the mind is to enable us to perceive and gain knowledge about our relationship with the external world, thereby creating our understanding of it . In “What Does It All Mean?” » by Thomas Nagel, it presents the relationship between our perception and behavioral similarities such as our interaction with the environment. By observing our physical construction and our behaviors. One of the examples he uses is whether chocolate would taste the same to you as it does to me. Determining whether our taste in chocolate would be the same is a difficult point to discuss because I can never know what something tastes like to you. In John Locke's view, "nothing exists in the mind which did not first arise in the senses." Therefore, these secondary qualities, as he would call them, the color and taste of the ice cream, are subjective and exist as ideas. If our senses were suppressed, our mind would still perceive, conclude, and create an experience. Locke calls this representative realism, the theory that we perceive objects indirectly by means of our idea of ​​them. All of this will serves as the purpose of why the mind was created. The foundation or what it was designed to do will not change from person to person. Change occurs at the point of perception as this is left to the interpretation of the mind processing the information. Spirit depends on my physical existence for its existence. If this is plausible, can we know other minds? I believe we