A young man sees a sunset and, unable to understand or to express the emotion that it rouses in him, concludes that it must be the gateway to a world that lies beyond. It is difficult for any of us in moments of intense aesthetic（美的） experience to resist the suggestion that we are catching a glimpse（一瞥） of a light that shies down to us from a different realm（领域） of existence, different and, because the experience is intensely（强烈地） moving in some way higher. And, though the gleams blind and dazzle（使……目眩）, yet do they convey a hint（暗示） of beauty and serenity greater than we have known or imagined? Greater too than we can describe.