ON ACTING: A Scene's Conflictual Tactics
Emotion must be seen as just another tactical phenomenon (albeit inner): it is the actor-as-character’s inner physical body in operation toward his/her goal; and we 'feel' it in operation. Hence we use the term 'feelings'.
A character's tactics are not always direct. They are more often indirect (like most of human behavior), back-tracking, circuitous, lateral.
But they always originate, and are fundamentally meant to operate, as forward propelling human instrumentality in the challenging ongoing struggle of each character toward their respective objectives.