A thankless man never does a thankful deed.

忘恩负义的人从不做感恩的事。

相关名言

If a fellow isn't thankful for what he's got, he isn't likely to be thankful for what he's going to get.

如果一个人对他所拥有的不心存感激,他就不可能对他将要得到的心存感激。