The tempest threatens before it comes；houses creak before they fall.
暴风雨来前要怒吼，房屋倒塌前会有裂声。
——Latin Proverb
——拉丁谚语
A person is not punishable unless he had been forewarned.
没有事前警告，一个人不该受处罚。
——Simmon
——西门
He that is warned is half armed.
受到警告便已武装了一半。——Hill
——希尔
