YOU SAID:

Swear not by the moon, the inconstant moon

INTO JAPANESE

月にかけて誓うな、変わりやすい月にかけて誓うな

BACK INTO ENGLISH

Don't swear by the moon, don't swear by the changeable moon

INTO JAPANESE

月を誓うな、変わりやすい月を誓うな

BACK INTO ENGLISH

Don't swear by the moon, don't swear by the changeable moon