The Maslow Hierarchy of Needs is a psychological theory that states what motivates humans. Starting with the most basic needs, the list is as follows: Physiological (breathing, food, water, sleep, etc.), Safety (security of body, health, resources, etc.), Love/belonging (friendship, family, etc.), Esteem (self-esteem, confidence, respect of and by others, etc.), and Self-Actualization (problem solving, morality, creativity, etc.).