Solipsism has no real ground to stand on and the pragmatist is the ver — Solipsism

"Solipsism need not be positive, it need not assume any burden of proof. The defender of solipsism may proceed as follows: "You mistake my purpose; I am not trying to prove the truth of solipsism. I say merely that the situation is ambiguous and capable of two explanations, and I see nothing but sentiment which obliges me to reject the solipsistic one. ...logically we are left with a sort of negative solipsism on our hands which we can not get rid of. Actually we simply toss it away. We can not stand that kind of suggestion. Our whole being rebels. We simply banish solipsism out of court. But I submit that this is not a logical nor a philosophical way of escape."

"Solipsism... is sometimes spoken of as the philosophical term for insanity. It certainly seems to stand for metaphysics run mad, or, in politer language, for subjective idealism carried to extremes. The solipsist claims to be the sole inhabitant of the universe, and all manifestations to the contrary are merely subjective states of his own. As with so many other mentally unbalanced persons, his cosmos is all ego."

"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."

"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 selfs) states." The argument derives its strength, in part, from false theory, but to a greater extent perhaps, from thoughtless obscurity."

"All the inclinations together (which can be reduced to a tolerable system, in which case their satisfaction is called happiness) constitutes self-regard, (solipsismus). This is either the self-love that consists in an excessive fondness for oneself (philautia), or satisfaction with oneself (arrogantia). The former is called particularly selfishness; the latter self-conceit."

"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."