Abraham Maslow developed a theory of motivation known as Maslow's Hierarchy of Needs. [1] The hierarchy suggests that people are motivated to fulfill basic needs before moving on to other needs. The hierarchy consists of physiological needs, safety needs, love and belonging needs, esteem needs, and self-actualization needs. [2] Maslow believed that people are motivated to fulfill needs that they have not yet met and that lower level needs must be satisfied before progressing to meet higher level needs. [3] Maslow's theory suggests that human motivation is based on people seeking fulfillment and purpose.