Solipsism is the philosophical position that only one’s own mind is certain to exist. The term comes from Latin solus, meaning “alone,” and ipse, meaning “self.” As an epistemological position, it holds that knowledge of anything outside one’s own mind is open to doubt. As a metaphysical position, it goes as far as claiming that anything outside one’s mind does not even exist. As a methodological position, it does not go as far as the above, but it still maintains that anything outside one’s own mind is difficult, if not impossible, to understand with any certainty. Descartes and Berkeley are usually considered to be the leading exponents of solipsism, but Schopenhauer and Freud are often thought of as solipsists, as well. Going further back, both yoga and Buddhism contain elements of solipsism, for the unenlightened mind is the source of untold delusions about the self and the world. The only way to rid one’s own the mind of all delusions is by stilling it. This is my position, too. And I am the only one responsible for the stilling of my own mind. In the meanwhile, my mind is my own playground.