The festive volume entitled Ratio et Mensura, published for the 60th birthday of Professor Dr. Miklós Király, was edited by Professor Dr. Réka Somssich. In the festive volume Dr. Éva Lukács Gellérné published an English-language article titled 'Hungarian Family Support Policies in the Light of Demographic Challenges in the EU'. The festive volume contains articles by renowned representatives of a number of areas of law: the general and specific issues of private law, private international law and European integration (European law). In the volume one can read the articles of more than 20 university lecturers, most of them are current or former lecturers and guest lecturers of ELTE University, Faculty of Law.