辅导有困难的同学或者帮忙打扫社区卫生都是一种奉献行为。

It's a kind of contribution to tutor a classmate who's having trouble or help clear up your neighbourhood.

youdao

教导他，让他知道：世界上有一个恶棍，就有一个英雄；有一个奸诈的政客，就有一个富有奉献精神的领袖；有一个敌人，就有一个朋友。

Teach him that for every scoundrel there is a hero; that for every dishonest politician, there is a devoted leader; that for every enemy there is a friend.

youdao

你的奉献，而不是你的获得，决定你有多幸福。

"Happiness depends on what you can give. Not what you can get".

youdao

We have the capacity to think morally, we have the capacity to act morally, and to be altruistic or benevolent.

我们能够以道德的方式思考，我们也能够做有道德的事，我们可以无私奉献，可以乐善好施。

普林斯顿公开课 - 人性课程节选