This document discusses envy from multiple perspectives. It begins by defining envy as a natural feeling of discontent that occurs when someone lacks another's advantages, such as qualities, possessions, or achievements. Envy can be perceived either as a destructive emotion that wishes harm upon others or as a positive emotion that drives self-improvement. Viewed positively, envy pushes people to ask how others succeeded, understand their methods, learn from them, and ultimately achieve the same or greater advantages. The document also claims that envy can empower cognitive functions, unlock brain power, and drive thinking ahead. It argues that envy has contributed to individuals' success and the upward progress of mankind throughout history.