Abstract
The indisputable success of experimental science caused a division in philosophy at the turn of the 21st century. A substantial part of philosophers was inspired by ground-breaking writings of W. V. O. Quine and they followed philosophical naturalism that considers hypothetical-deductive method the most effective or the only way to acquire justified true beliefs. Other philosophers are worried about the hegemony of empirical sciences and warn against excessive ambitions of scientific methodology. Scientism or scientific imperialism is a point of view, according to which there are no boundaries of scientific knowledge. According to its supporters, science can describe and explain what is to be described and explained. In my paper I will introduce some common ways how to define and criticize scientism and scientific imperialism. The aim is to demonstrate that criticism of scientism and scientific imperialism is based on the incorrect understanding of what scientific methodology is, how scientific knowledge emerges from natural cognition and in which ways science differs from its alternatives.