Solipsism stresses doubt about the reality of others compared to oneself. He argued that, due to solipsism, we cannot be certain that the external world exists.
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Philosophical Use
Used mainly in philosophy to discuss self-knowledge versus external reality. The philosopher's discussion on solipsism explored our understanding of consciousness.
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Not Narcissism
Solipsism isn't just about ego; it questions the existence of anything beyond oneself. His debate on solipsism questioned if our perceptions truly reflect an external reality.