Masaryk is primarily known as the first president of Czechoslovakia. While completely concealed his activity as a philosopher. In the article I would like to present his scientific work as philosopher and sociologist. Interesting especially here is a phenomenological concept of ethics, which scratch Masaryk is looking for in the philosophy of Hume. He believes that the ethics has to rely on inductive thinking. At the same time, Masaryk point out that it is an interim ethics, which goal will be aimed in the future. On the one hand ethics can be a psychological, on the other hand it can also be seen as a transitional phase. In this sense, ethics based on the spirit of reason is the future of humanity.