The document explores the contrasting views on human nature, discussing pessimistic perspectives like Hobbes' notion of humans as inherently selfish and in constant conflict, and optimistic views from thinkers like Rousseau and Mencius who argue for innate goodness and altruism. It suggests that moral evils arise from failures in moral maturity and highlights the importance of cooperation and moral development in human interactions. Ultimately, it argues that human nature encompasses both self-interest and altruism, and that conflicts are a result of collective moral failings rather than inherent selfishness.