Emotion (n.) colour thoughts; they have duration but no place, and directed emotions might be called attitudes.
Emotion (n.) can colour thoughts; bodily pain cannot — sad thoughts, but no toothachy ones.
An Emotion (n.) cannot be abolished by imagining away its bodily sensations — and trying to laugh while grieving might sharpen the grief enormously.
Emotion (n.) is seen, not inferred: we read a face as sad or bored directly, the way no doctor diagnoses — grief is personified in it.
Emotion (n.) has a course — rage flares, abates, vanishes — but no location, and its sensations, like a tear-heavy voice, are not the emotion.
Emotion (n.) is expressed in thought: a man talks angrily or sadly, never lumbagoishly.