Wahrheit

Wahrheit
German noun, f, plural  Wahrheiten. Etymology: from wahr (“true”) +‎ -heit (“-ness”).
1.         truth. 
==Occurances in Prose and Poetry==
For prose, the word crops up once in a 1948 letter addressed to José Rodríguez Feo. The point of the letter is simply to keep in touch. After opening with a salutation in French, Stevens chats about philosophy and a periodical before offering a closing remark in German: “Lebewohl. Dichtung und Wahrheit Uber Alles!” (Letters 580).  (Translation: “Farewell. Poetry and truth about everything!”)
In poetry, Stevens uses the word in stanza XXIII of “The Man with the Blue Guitar.” It is part of the phrase, “Dichtung und Wahrheit,” which is also the title of Goethe’s autobiography, Aus meinem Leben: Dichtung und Wahrheit. (Translation: From My Life: Poetry and Truth.)
The stanza operates on a series of contrasts: “voice in the clouds” versus “voice on earth,” the “imagined” versus the “real,” the realm of the heavenly spirit-world and the realm of the earthly senses and pleasures.
A few final solutions, like a duet
With the undertaker: a voice in the clouds,
 
Another on earth, the one a voice
Of ether, the other smelling of drink,
 
The voice of ether prevailing, the swell
Of the undertaker's song in the snow
 
Apostrophizing wreaths, the voice
In the clouds serene and final, next
 
The grunted breath scene and final,
The imagined and the real, thought
 
And the truth, Dichtung und Wahrheit, all
Confusion solved, as in a refrain
 
One keeps on playing year by year,
Concerning the nature of things as they are.