EN
The article presents an analysis of the process of making decisions leading to the foundation of Polish Academy of Sciences and the liquidation Polish Academy of Arts and Sciences and Warsaw Science Society. There are also showed the premises that influenced the opinions of the scholars and experts being at strife with each other. Finally, "action N" (Nauka - Science) brought about the situation, in which the scientists did not offer any resistance to the circumstances and the foundations of academic science were destroyed. To the scientific institutions was introduced a new system of values, ideological principles and adequate methods of acting. Spectacular proceedings of Polish Science Congress I were accompanied with a propagandist setting that veiled both the aims and factual decisions and the intended system of governing the science.