"The argument in favor of Solispsism, put most simply, is as follows: "I cannot transcend experience, and experience is my experience. From this it follows that nothing beyond myself exists; for what is experience is its (the self's) states." The argument derives its strength, in part, from false theory, but to a greater extent perhaps, from thoughtless obscurity."
January 1, 1970
https://en.wikiquote.org/wiki/Solipsism