The collection contains papers of theoretical seminar on problems of truth, traditionally held for eight years in the framework of International forum "Days of philosophy in St. Petersburg". It presents articles on the specifics of understanding the truth in science, religion, art, political, legal and economic spheres of culture. Professional philosophy is thus synergetic field that combines the search for truth in all of these areas. The edition is addressed to students, postgraduate students, scientific and pedagogical workers and representatives of other cultural fields, all interested in the understanding of what is truth.