Abstract
Science can (also) be studied as responsible and rational human activity, guided and legitimated by its own normative system: a finite and ordered set of norms and values for agents in a given field of activity. Such norms of inquiry are needed for a rationality requirement of science, which also presupposes a partial agreement on (acceptance of, respect for) these norms between scientists and their social environment. The notions of scientific accountability, autonomy, and freedom of inquiry are elucidated by means of an action-theoretic definition of science and by a certain use of the distinction between internal methodological) and external norms of science.