Subjects addressed in the paper: 1. Idea-project of developing of history-sociology of science as most important discipline of science of science researching into continuity and change of the status and functions of scientific knowledge in shaping of human life. 2. Scientific world perspective as a matrix micro-world, which identity lasts in dialectics of continuity and change in ontological, epistemological, praxiological and axiological ideas concerning understanding and performing of scientific knowledge. 3. Scientific social practice as a forum of intentional cooperation of researchers, who create cognitive values. 4. Permanent elements of scientific activity, different in various places, but phenomenally responsible for identity of science. 5. Feature of internal history of science as a factor of making scientific knowledge a realm of culture fragmentation and feature of external history of science as a factor of making scientific knowledge a realm integrated with system of multiplicity of social practices. 6. Eternal war between two different styles of research (constructive, systemic thinking vs. investigating, problematic thinking) forming dialectics, insurmountable by changes leading to improvement. 7. Important facts, proving changes in scientific social practice, but at the same time ascertaining its lasting in old-established identity.