At the beginning of his philosophical journey, Masaryk took a critical stance toward Kant. Influenced by Brentano, Schopenhauer, and Comte’s positivism, he regarded Kant as a thinker too metaphysical and detached from science. He reproached him for his apriorism, the reason–senses dualism, and the lack of practical solutions. Although he appreciated Kant’s attempt to overcome Hume’s skepticism, he claimed it had ended in failure. At that time, he valued Locke’s empiricism and Comte’s concrete analyses more than Kant’s abstract critical system.
Over time, his attitude toward Kant softened. In Moderní člověk a náboženství, Masaryk – though still critical of apriorism – began to admire Kant’s authenticity and consistency in the pursuit of truth. He acknowledged that anyone who wishes to understand modern philosophy must grapple with Kant. He also noticed that Kant, better than Hume, demonstrated the organic unity of knowledge and the importance of critical reflection. For him, Kant became not only a point of reference but also an inspiration in debates about the meaning of rationalism and religion.
In his mature works, especially in Rusko a Evropa, Masaryk turned Kant into a symbol of criticism, reason, and democracy, setting him in opposition to Russian mysticism, irrationalism, and authoritarianism. In Masaryk’s eyes, the critique of Kant became a tool in the struggle against myth, aristocracy, and theocracy, while at the same time serving as a foundation for modern democratic consciousness. Ultimately, Kant – once regarded by Masaryk as a metaphysician – came to be recognized as a world-historical philosopher and one of the prophets of the future.