This diploma thesis aims to argue for compatibility of liberal perfectionist political theory with liberal-democratic system and sketch desirable consequences of liberal- perfectionistic policies in practice. It is divided into three main parts. The first one presents the perfectionistic theory and tries to clearly define ethical, political and liberal perfectionism. The second part argues for compatibility of liberal- perfectionistic theory with democratic practices through referring to intrinsic contradiction of principle of state neutrality as presented by John Rawls. The last part presents considerations about liberal-perfectionist practice, mainly in civic education, and its possible applications for weakening of populism.

(in English): The thesis called "The Relationship between perfectionism, achievement motivation, subjective life satisfaction and self-esteem among gifted and non-gifted high school students' aims to explore the differences between gifted high school students in natural sciences and their perrs in school achievement motivation, level of self-esteem, subjective life satisfaction and perfectionism. The thesis is divided into three parts: theoretical, methodological and empirical. The theoretical part deals with variables examined in the context of the giftedness and also outlines the results of previous studies in this field. The thesis focuses on intellectually gifted high school students in a field of natural sciences, especially in biology and chemistry. Research in tis thesis is quantitative. To detect self-esteem was used Rosenberg self-esteem scale, for detecting a level of global life satisfaction we used life satisfaction scale recommended by the OECD and the manual by The New Economics Foundation, school achievement motivation was measured by evaluation tool according to Hrabal and Pavelková (2011). For measuring of perfectionism, we used a modified questionnaire to measure perfectionism in sport according to Stoeber and Rambow (2007). The empirical part is devoted to statistical data...