Kletke is primarily a children's writer; his songs are full of warm feeling, heartfelt simplicity and naive humor, Including Kinderlieder and Die Kinderwelt.

[1][2] His experience with writing poetry and children's tales began during his schooling, although he would go onto graduate with a doctorate in philosophy from the University of Breslau.

[1] In 1832, Kletke was registered as a part of the Corps Borussia Breslau [de], an educational fraternity with members such as the German playwright Arthur Müller, philologist Ernest Wahner, and ancient historian Walter Otto.

However, because of ruler Klemens von Metternich's restrictive censorship on published literature,[4] one year later he decided to move to Berlin.

[1] Kletke is primarily a children's writer; his songs are full of warm feeling, heartfelt simplicity and naive humor, including Kinderlieder and Die Kinderwelt.