Notebook January 1835
p. 2–3“Uber diesen Schleger hebt, soll Wahrheit schauen / Sey hinter ihm was will. Ich heb' ihn auf =”
Fuller, Margaret. "Notebook January 1835." Houghton Library, Harvard University; bMS Am 1086 (86); Box 6.
Inferred Ich heb' ihn auf') matches the key lines of Schiller's ballad 'Das verschleierte Bild zu Sais' (1795): the youth declares he will lift the veil to behold Truth. Fuller uses two lines from Schiller as the epigraph for this notebook. The lines correspond to the climactic moment in Schiller's ballad 'Das verschleierte Bild zu Sais' (The Veiled Image at Sais), first published in Die Horen, 9.
'Schleger' is a transcription variant of 'Schleier' (veil). Ich heb' ihn auf' — 'Schleger' is certainly a transcription of 'Schleier' (veil).