The document discusses principles of emotions, including that emotions are primary or blended, influenced by the body, mind and culture, and can be adaptive or maladaptive. It also presents three theories on the relationship between events, physiology and emotions - the common sense theory, James-Lange theory, and cognitive labeling theory. Key principles are that emotions are communicated verbally and nonverbally, governed by display rules, and have consequences, and that emotions can be contagious.