I don't let negativity bring me down.

Sometimes we get sad about things and we don’t like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don’t know why we are sad, so we say we aren’t sad but we really are.

多边主义不仅是应对共同威胁的问题，更是抓住共同机遇的问题。

重要的是不要停止提问。好奇心有其存在的理由。