Abstract
This article aims to present one of the main themes that characterize the philosophical reflection of Jan Patočka: the appearing as such. Specifically, this papers is focused on three questions: what (was) appears? How (wie) the world appears? Which is the hidden reason (Grund) that founds appearing, but that remains hidden? The Czech philosopher reaches a conception of phenomenality in which appearance can only be conceived through an a priori structure. This conception leads to a formal transcendentalism of appearing, on the basis of which it can only be thought, but not shown. The formal character of Patočka's approach, however, is a consequence of his speculative method. This speculative method, nevertheless, is problematic because on the one hand the structure of appearing is only responsible for its own laws (and not for what appears), on the other hand Patočka states that the phenomenal sphere also has a practical and vital function. The article traces the way the philosopher proceeds on this theme, which points he analyzes it discusses and which difficulties he exposes himself to. Although Patočka's reflection seems to postulate more than what he can justify (neglecting appearing as experiencing), it offers a strong hint to rethink the roots of the major phenomenological themes still remaining open.