This letter by Ladislav Hejdánek, dated April 1968, outlines a conceptual and strategic framework for the ideological commission of the Society for Human Rights. The author emphasizes the need for a rigorous philosophical investigation into human dignity and the concept of "natural rights" through interdisciplinary working groups. Hejdánek suggests that the society should focus on uncovering hidden human rights violations and societal self-deceptions, citing ethical issues such as abortion legislation as examples for critical study. The document highlights the importance of analyzing the relationship between power and law, mechanisms of political manipulation, and the protection of marginalized groups and minorities. The proposed activities include academic publishing, public education, and establishing international cooperation with research centers. Ultimately, the text serves as a call for intensive intellectual labor and the application of a critical conscience to social reality during the Prague Spring, aiming to provide a solid foundation for the systematic defense of human rights.