Gain insight into the writings of Peter Drucker, one of management's greatest thinkers, with this digital collection curated by Harvard Business Review. “Managing Oneself," “What Makes an Effective Executive," “The Theory of the Business," “Why Read Peter Drucker," “What Peter Drucker Knew About 2020," and “Clay Christensen on Peter Drucker" will help managers and leaders better understand, and manage, the complex challenges they face in our volatile world.