I have 'mixed emotions' [='mixed feelings'] about doing this. [=I'm not sure if I want to do this or not]
He's always found it hard to express (his) 'emotions'. [=to show his feelings]
The defendant showed/displayed no 'emotion' when the verdict was read.
(..) For those regarded as warriors... When engaged in combat... the vanquishing of thine enemy can be the warrior's only concern. Suppress a human emotion and compassion... ...kill whoever stands in thy way, even if that be Lord God, or Buddha himself. This truth lies at the heart of the art of combat. (..)2003 Kill Bill: Vol. 1