The idea is that reality is all in the mind. If something looks like reality and feels like reality (and sounds and smells and tastes like reality), then it is reality. If something appears real, and there’s no appearance to the contrary, it is real. In philosophy, Morpheus’s appearance is reality thesis is a central form of idealism: the thesis that reality is made of minds. Idealism in philosophy isn’t so much about ideals as about ideas. Idealism often says that reality is made of ideas: sensations, thoughts, feelings and other components of the mind.
