The philosopher recognized for significant contributions to the field of ethics is Immanuel Kant. A central figure in modern philosophy, Kant's ethical framework is grounded in the notion of the Categorical Imperative, which posits that moral actions must be universalizable. His work emphasizes the importance of autonomy and rationality in moral decision-making. Kant's ideas have profoundly influenced contemporary discussions on morality, duty, and rights. His publications, particularly the Groundwork of the Metaphysics of Morals, remain critical texts in ethical theory and philosophy today.