唯我论认为唯“我”存在，“我”以外的任何存在都不可能被证明存在并且可能不存在。

唯我论（英语：Solipsism）是由拉丁语：solus，意为唯独、唯一，以及拉丁语：ipse，意为自我，所组成。字面意思为，只有我，唯有我。

Solipsism (/ˈsɒlᵻpsɪzəm/; fromLatin solus, meaning "alone",and ipse, meaning "self") is the philosophical idea that only one's own mind is sure to exist. As an epistemological position, solipsism holds that knowledge of anything outside one's own mind is unsure; the external world and other minds cannot be known and might not exist outside of the mind. As a metaphysical position, solipsism goes further to the conclusion that the world and other minds do not exist.