1、孤久则安的解释是：既来之，则安之jìláizhī,zéānzhī[sincewearehere,wemayaswellstayandmakethebestofit;nowthatwehavecome,letusstayandtaketheroughwiththesmooth;nowyouarehere,you'dbetterstay;sincethisisso,it'sbettertoacceptitandenjoyit]既已来此,那就随安于此他果然既来之,则安之,我也只得因居之安,则资之深。——《儿女英雄传》。