This article describes the theoretical concept of constitutional change. The cases of constitutional changes and amendments since 1989 have been analyzed in the text. The historical approach is used as a background for the current Polish events conceptualization.
The theories formulated by Y. Raznai, R. Albert, B. Ackermann, S. Griffin, D. Landau are applied for purpose of the analysis. The authors consider the problems of: constitutional change, constitutional amendment and dismemberment, constitutional moment, as well as a kind of constitutionalism, which is connected to an abuse of power by the parliamentary majority (illiberal constitutionalism).
This paper analyses following issues: the conceptualization of constitutional amendment procedure and constitutional change in formal and informal ways as well as the constitutional moment. Moreover, the Polish academia opinions on the amendment and change are presented. Eventually, the identification of the recent Polish systemic events from a theoretical perspective and the summary of the research are provided.
The assessment of current events takes into account the historical background – the transformation started in 1989 and ended with the adoption of the 1997 Constitution. The conclusion is connected to identification of the constitutional moments which legitimize or not the transformation of the system.

In this paper I would like to present an interpretation of David Hume’s political theory. Therefore, a method of investigation can be recognized as hermeneutical one. Main threads which I would like to emphasize are: concept of stability, distribution of power, role of an opinion in political dimension and a conservative attitude toward a change. I claim that important lesson for political science can be taken from his theory. Generally speaking, this lesson consists in refusing the so-called political regime fetishism and focusing on the relevant issues of social stability. These issues are strictly determined by the opinions, hence the proper subject-matter of political science is identified with them. As one of the conclusions I propose a thesis that politics is, and ought only to be slave of opinions, what is an allusion to a famous sentence from A Treatise of Human Nature that the reason is, and ought only to be the slave of the passions.