"Experience, already reduced to a group of impressions, is ringed round for each one of us by that thick wall of personality through which no real voice has ever pierced on its way to us, or from us to that which we can only conjecture to be without"

This quote by Walter Pater speaks to the idea that our individual experiences are filtered through our own personal lens. We are each surrounded by a "thick wall of character" that shapes our perceptions and analyses of the world around us. This wall avoids us from truly understanding the experiences of others, and from others comprehending our own experiences. We can never truly understand what it is like to be someone else, and our own experiences are never fully understood by others. This wall of character also prevents us from understanding the real nature of the world around us, as we can just "opinion" what lies beyond our own experiences. This quote speaks to the concept that our specific experiences are limited by our own individual perspectives, which we can never ever genuinely comprehend the experiences of others or the world around us.