I remember being so angry, and also suffused by sadness.

我记得我一直很生气，同时也很难过。

youdao

Tears are not necessarily of sadness, remember.

眼泪不必定悲哀，记得。

youdao

Remember this: one definition of happiness is simply the absence of an opposite emotion, whether it is pain, sadness or something else.

记住，如果你从没感到痛苦、悲伤或其它类似的情绪，那就是幸福，就这么简单。

youdao

"Despite the feelings of anger, frustration,and sadness that envelop our hearts, we gather here tonight to mourn,to remember,and above all, to offer our own solemn promise that none of us will rest until all of us are safe,".

VOA: standard.2009.08.04

Happiness for the fact that we should remember his life not in sadness, but in an outburst of emotion and thanks and praise.

FORBES: Tonight, We All "Think Different"