There is no absolute definition for happiness. Even your heart can vibrate with some petty things in everyday life.

幸福本没有绝对的定义，平常一些小事也往往能撼动你的心灵。

youdao

There is no absolute definition for happiness. Some trifles can also move your heart in everyday life. Actually, happiness only depends on how you view it mentally.

幸福本没有绝对的定义，平常一些小事也往往能撼动你的心灵。幸福与否，只在乎你的心怎么看待。

youdao

The idea "happiness", to be sure, will not sit still for easy definition.

可以肯定的是，“幸福”这个概念很难定义。

youdao

There is no definition of goodness for this modern approach, no definition of happiness.

在这种现代观点中是没有善恶,没有悲喜的定义的

耶鲁公开课 - 古希腊历史简介课程节选