Philosophical works are written texts that explore fundamental questions about existence, knowledge, values, reason, and reality. These texts often present arguments, theories, and ideas from various philosophers throughout history, such as Plato, Aristotle, and Immanuel Kant. They aim to provoke thought and encourage readers to examine their beliefs and assumptions. These works can take many forms, including essays, dialogues, and treatises. They cover a wide range of topics, such as ethics, metaphysics, and epistemology. Notable examples include Descartes' "Meditations on First Philosophy" and Nietzsche's "Thus Spoke Zarathustra," which continue to influence contemporary thought.