平生不做虧心事，半夜敲門心不驚

平生不做亏心事，半夜敲门心不惊
píngshēngbùzuòkuīxīnshì,bànyèqiāoménxīnbùjīng
  1. He who never wrongs others does not fear the knock in the night.
  2. Rest with a clear conscience.

CEDICT

Entry Composition

1 平生 píngshēng all one's life
2 不 bù
  1. no; not so
  2. (bound form) not; un-
3 做 zuò
  1. to make; to produce
  2. to write; to compose
  3. to do; to engage in; to hold (a party etc)
  4. (of a person) to be (an intermediary, a good student etc); to become (husband and wife, friends etc)
  5. (of a thing) to serve as; to be used for
  6. to assume (an air or manner)
4 虧心事 kuīxīnshì shameful deed
5 半夜 bànyè
  1. midnight
  2. in the middle of the night
6 敲門 qiāomén to knock on a door
7 心 xīn
  1. heart
  2. mind
  3. intention
  4. center
  5. core

classifiers: 顆, 個
8 不 bù
  1. no; not so
  2. (bound form) not; un-
9 驚 jīng
  1. to startle
  2. to be frightened
  3. to be scared
  4. alarm