What is hell? Hell is oneself. — Solipsism

"Bertrand Russell remarked that he was cured of solipsism for life by receiving a letter from a woman saying, Im so glad you think there may be something in solipsism. I wish there were more of us."

"Kant has said that there are some questions which should never be asked, and there is apostolic authority for the injunction "to avoid foolish questions." Only the fool has said in his heart that he is alone in the universe; but since philosophy has seriously raised the question of the existence of my neighbor and of the way in which I may come to know him, it may be not without interest to notice (i) how the problem has emerged, (ii) the importance of the problem for modern philosophy, and (iii) some leading solutions that have been offered."

"W. T. Krug follows Kants usage in identifying solipsism with moral egoism (making ones own self the end of all ones actions)... This identification is still repeated as late as 1890 by F. Kirchner. Meanwhile, some time during the 19th cent., solipsism was transferred from moral or practical egoism to theoretical (either epistemological or metaphysical) egoism, i.e. to the theory that I can know nothing but my own ideas and that I and my ideas are all that exists. This view was called simply egoism by Wolf (who treats it, rightly, as an extreme species of idealism), Mendelssohn, Tetens, and other 18th cent. writers."

"Solipsism has no real ground to stand on and the pragmatist is the very last in the line of those who may be accused of even seeming to have taken, or to have tried to take, his stand there."

"If I felt reckless or strong enough to shoulder the responsibility, I might not object to a solipsism that made me the all by emphasising the inevitable relation of experience to an experient; the trouble comes when other experients claim a monopoly of this relation in the face of conflicting claims, and propose to reduce me to incidents in their cosmic nightmare."

"[Solipsism is] the doctrine that all existence is experience, and that there is only one experient. The Solipsist thinks that he is the one. ...that the absolute idealist is a Solispsist need only be barely stated. ...He is a Solipsist because he believes that the Absolute is the sole experiment, and that he is himself the incarnate Absolute."