The thought of Karl Raimund Popper (1902–1994) is a phenomenon symptomatic of the twentieth century. It grew almost entirely out of the atmosphere which surrounded the empirical sciences. While Whitehead drew inspiration for his philosophy from the natural sciences and had the ambition to create a system in some sense consistent with the results of those sciences, it was not Popper's intention in general to create any philosophical system at all and in particular it was not his intention to create a philosophy of nature. Popper from the beginning was interested in science, its methods, and its assumptions