Motives are the reasons that drive human and animal behavior. They arise from biological needs like hunger, thirst, and homeostasis, as well as social and personal factors. Biologically, motives work to maintain equilibrium in the body. Socially, motives include achievement, aggression when frustrated, power over others, acquiring property, curiosity, affiliation with groups, seeking approval, and ensuring security. Unconscious motives also influence behavior. Motives energize, direct, sustain, and stop behaviors, and can help explain and predict actions. As a nurse, it is important to understand patients' motives to provide appropriate care and note how motives manifest in behaviors.