" We are constantly in touch with our feelings, but the tricky part is that our emotions and our feelings are not the same. We tend to conflate them, but feelings are internal subjective states that, strictly speaking, are known only to those who have them. I know my own feelings, but I don’t know yours, except for what you tell me about them. We communicate about our feelings by language. Emotions, on the other hand, are bodily and mental states— from anger and fear to sexual desire and affection and seeking the upper hand—that drive behavior. Triggered by certain stimuli and accompanied by behavioral changes, emotions are detectable on the outside in facial expression, skin color, vocal timbre, gestures, odor, and so on. Only when the person experiencing these changes becomes aware of them do they become feelings, which are conscious experiences. We show our emotions, but we talk about our feelings. "

― Frans de Waal , Mama's Last Hug: Animal Emotions and What They Tell Us about Ourselves