The seminar discusses Friedrich Hölderlin’s life and letters under the signs of insanity. The issue of madness is not to be discussed as a pathological phenomenon, as a mental illness nor as a clinical case, but rather as the event of language – as an openness of the what being is through (from and beyond) the event of human language. Madness is not to be interpreted as a collapse of psyche alone but as an event of Offenbarung/revelation (making open), in which the poet speaks what language is and hints at the program of Schicksal/destiny being embedded in poetry as a moment of human futurity. Reading material includes Hölderlin’s great rivers poems alongside his piece In lieblicher Bläue. The seminar discusses the measure of Offenbarung/revelation in his poetry as an event of thinking against the major trends of thought and poetry of German Idealism.