Leonard Peikoff, a prominent philosopher, is best known as the preeminent authority on Ayn Rand's philosophy of Objectivism, which he further developed and propagated. Born in 1933 in Winnipeg, Canada, he became Rand's close associate and intellectual heir. Peikoff dedicated his career to articulating and expanding upon Objectivist principles through lectures, essays, and books, including "Objectivism: The Philosophy of Ayn Rand" and "The DIM Hypothesis." He founded the Ayn Rand Institute, promoting the study and understanding of Objectivism. His work continues to influence fields such as ethics, epistemology, and political philosophy, embodying his commitment to rational thought and individualism.