The belief that only oneself and one’s experience exists. Solipsism is the extreme consequence of believing that knowledge must be founded on inner, personal states of experience, and then failing to find a bridge whereby they can inform us of anything beyond themselves. Solipsism of the present moment extends its scepticism even to one’s own past states, so that all that is left is me, now. Russell reports meeting someone who claimed that she was a solipsist, and was surprised that more people were not so as well.