Probably the most well-known approach to motivation is Maslow's Hierarchy of Needs theory. Maslow felt you needed to satisfy human needs in different levels in order to motivate people to higher levels. According to Maslow, people have five levels of needs. They start with the basic needs that are biological and physiological. The second level is the safety and security needs. The third is the need to belong or social needs. Finally, the last two levels consist of the highest motivational needs: self-esteem and self-fulfillment.