History is hard to know...but...it seems entirely reasonable to think that every now and then the energy of a whole generation comes to a head in a long fine flash, for reasons that nobody really understands at the time - and which never explain, in retrospect, what actually happened.

历史很难知道，但是……似乎完全有理由认为，整整一代人的精力会时不时地在很长一段美好的闪光中迸发出来，原因是当时没有人真正理解的——回想起来，这些原因从来没有解释过究竟发生了什么。