The heart's intuition is activated through its sense of caring and through its sensitivity and openness to feel. The intuitions of the heart represent the purest and most subtle of feelings and are dependent on relative states of mental and emotional calmness. Closed hearted people do not feel much even on the more dense level of emotions and can hardly feel love, even when it is being heaped on them by someone who loves them. Thus, they cannot be expected to hear the subtle messages of the intuitive level of intelligence.