a swallow, returning from abroad and especially fond of dwelling with men, built herself a nest in the wall of a court of justice and there hatched seven young birds. a serpent gliding past the nest from its hole in the wall ate up the young unfledged nestlings. the swallow, finding her nest empty, lamented greatly and exclaimed: "woe to me a stranger! that in this place where all others'' rights are protected, i alone should suffer wrong."

燕子迁徙归来，喜爱和人居住在一起，于是就带着她的七个小宝宝在法院的墙上安了家。【封先生的撒娇精又奶又甜】有一天，她外出觅食，贪吃的蛇爬进了她的巢，把她的孩子们全部吃掉了。归来的燕子，看着空空的巢穴，伤心极了。同伴纷纷来安慰她，可是燕子说:“我不仅因为失去孩子们而伤心，更是因为我在人类维护正义的地方遭遇了违反正义的事情。”

正义的维护不是一成不变的。