来而不往非礼也 lái ér bù wǎng fēi lǐ yě

DEFINITIONS

  1. not to reciprocate is against etiquette (classical)
  2. to respond in kind

CHARACTERS

来 lái come, coming; return, returning
而 ér and; and then; and yet; but
不 bù no, not; un-; negative prefix
往 wǎng go, depart; past, formerly
非 fēi not, negative, non-; oppose
礼 lǐ social custom; manners; courtesy
也 yě also; classical final particle of strong affirmation or identity