A clear conscience laughs at false accusations

本期涉及谚语：
1）A clear conscience laughs at false accusations. 问心无愧者不怕别人诬告。
2）… is a sure card有坚定的自信心
3）…sleeps in thunder. 熟睡无恐、高枕无忧
4）A good anvil does not fear the hammer. (意译）真金不怕火
5）True blue will never stain. (意译）真金不怕火
6) A clean hand wants no washing. 双手洁净，无须洗刷。
7）Conscience does make cowards of us all. 良心使人们成为懦夫 （做贼心虚）。