The "Pleasure Principle" is a concept in psychology that refers to the instinctual drive to seek pleasure and avoid pain. It suggests that individuals are motivated by the desire for immediate gratification of their needs and desires. This principle is often associated with the early stages of human development, where children act on their impulses without considering the consequences. In the context of psychoanalysis, Sigmund Freud introduced the Pleasure Principle as a fundamental aspect of the human psyche. He contrasted it with the "Reality Principle," which involves delaying gratification to meet societal expectations and long-term goals. The balance between these two principles influences behavior and decision-making throughout life.