The one who has helped others climb the ladder gets kicked in the teeth.

帮助别人爬上梯子的人会被踢到牙齿。

相关名言

Most people return small favors, acknowledge medium ones and repay greater ones - with ingratitude.

大多数人以忘恩负义的方式回报小恩惠,承认小恩惠,回报大恩惠。

Ingratitude is the essence of vileness.

忘恩负义是卑劣的本质。