Philosophical schools are organized groups of thinkers who share similar beliefs and approaches to understanding fundamental questions about existence, knowledge, and ethics. These schools often develop distinct theories and methodologies, influencing how philosophy is studied and practiced. Examples include Stoicism, which emphasizes self-control and rationality, and Existentialism, which focuses on individual freedom and choice. Throughout history, various philosophical schools have emerged, each contributing to the broader discourse of philosophy. Notable schools include Platonism, based on the ideas of Plato, and Empiricism, which emphasizes knowledge gained through sensory experience. These schools help shape philosophical thought and guide discussions on important topics.