[if there must be today,then why should there have been other days;if I had known it would come to this,Iwould have acted differently;if it has to be like this now,it's a pity it was even like that in the beginning] 既然有今日的如此結(jié)果,何必在當(dāng)初那么做。用以感慨現(xiàn)今的不如意,而深悔過(guò)去的錯(cuò)誤

寶玉在身后面嘆道:“既有今日,何必當(dāng)初。”——《紅樓夢(mèng)》