Regret is an appalling waste of energy; you can't build on it; it is only good for wallowing in.

Regret is an appalling waste of energy; you can't build on it; it is only good for wallowing in.

后悔是一种可怕的精力浪费;你不能依赖它;它只适合沉迷其中。

-- Katherine Mansfield 凯瑟琳·曼斯菲尔德