EN
This paper aims to introduce Whitehead’s philosophical thinking in general while focusing in particular on his critique of modern science and the concrete solutions he presents in his works from both his London period and the beginning of his Harvard period. Whitehead’s main project was the critical revision of the ultimate facts of natural science. He saw the task of speculative philosophy as one of redefining the main concepts of natural science in accordance with the rising modern physics and with his own profound analysis of the structure of human experience. Finally, the paper attempts an examination of the specific role of metaphysics in the system of natural knowledge.