To translate a literaray work is not only to understand and make understand but also to enjoy and make enjoy.What's more,to translate a verse is not only to understand and enjoy but also delight and make others delight in it.这是先生在中诗英韵探胜里面说的,我觉得比较符合你的意思.
最后那个从心所欲不逾矩,应该是这个境界:
What more felicity can fall to creature,
Than to enjoy delight with liberty.
希望可以帮到你.