The aim of this article is to present the main characteristics of the philosophy of Vladimir Tardy (1906-1987), professor at Charles University, drawing on his unpublished manuscripts from the 1940’s to the 1970’s. Tardy takes as his point of departure the assumption that the external world really exists and that it is knowable by the methods of critical analysis. His philosophy is close to scientism, but not identical with it. In the area of metaphysics it offers a monistic conception of a developing universe, constituted by matter, the structural arrangement of which is connected to the quality of experience in living and non-living nature. The most complex known structure is the brain which is the bearer of human consciousness. Tardy’s philosophy is above all a valuable witness to its time. Among its more timeless aspects are its reflections on the relation between the general and the particular, between mind and the brain, and on the basis of mathematical ideas, as well as it psychological analysis of the personalities of some influential philosophers.