The paper compares Comenius’ usage of the terms unum, verum and bonum in his metaphysical writings both with the expression of the image of the Trinity in De civitate dei by Aurelius Augustinus and with the concept of existence as three basic movements in the philosophical work of Jan Patočka. The purpose of the text is to show, despite the differences in historical periods, language and life experience, the possible similarity or connection of the vision that Augustine, Comenius and Patočka mediate in their works.