When dynasties fall, the Qin have no time to mourn themselves; if later men mourn without learning, still later men will mourn them in turn.
Tips
history
From 《阿房宫赋》 by Du Mu 杜牧 (late Tang): 秦人不暇自哀，而后人哀之；后人哀之而不鉴之，亦使后人而复哀后人也. Warning: if later dynasties mourn Qin without learning Qin's lesson, they will repeat it. Du Mu meant the late Tang - the line became a historical-cycle aphorism.
usage
不暇 = 'have no leisure/time to' (still used today, e.g. 自顾不暇). 自哀 = 'grieve for oneself.'
