Emotions bring the body into the loop of reason

Emotions and the feelings are not a luxury, they are a means of communicating our states of mind to others. But they are also a way of guiding our own judgments and decisions. Emotions bring the body into the loop of reason.
― António R. Damásio, Descartes' Error: Emotion, Reason and the Human Brain

“I do not see emotions and feelings as the intangible and vaporous qualities that many presume them to be. Their subject matter is concrete, and they can be related to specific systems in body and brain, no less so than vision or speech.”
― António R. Damásio, Descartes' Error: Emotion, Reason and the Human Brain