摘要：One of the important elements of scientific knowledge is the scientific content of the norms and ideals of scientific research. It consists of statements of two kinds: 1) claims on the criteria of scientific knowledge and how it differs from various kinds of non-scientific knowledge (ordinary, artistic, philosophical, religious, etc.) and 2) claims about the methods of scientific cognition, about his ideals and norms. The first genus claims for science has the status of a priori and a constant (absolute) knowledge, and the second kind of scientific epistemological claims has the status of a relative and changeable knowledge, both in diachronic and synchronic aspects of function of science. These two kinds of General scientific principles of epistemological knowledge complement each other and interact in a real process of scientific cognition.
