The Little Prince by Antoine de Saint-Exupéry

The Little Prince, first published in 1943, is a novella and the most famous work of the French aristocrat writer, poet and pioneering aviator Antoine de Saint-Exupéry (1900–1944).
The novella The Little Prince is both the most read and most translated book in the French language, and was voted the best book of the 20th century in France. Translated into more than 250 languages and dialects, selling over a million copies per year with sales totaling over 200 million copies worldwide, it has become one of the best-selling books ever published.
The reader is introduced to the narrator who, as a young boy, drew a boa constrictor digesting an elephant. However, he is discouraged from drawing when all adults who look at his picture see a hat, instead. The narrator attempts to explain what his first picture depicts by drawing another one clearly showing the elephant, disturbing the adults as a result. As such, he decides to become a pilot, which eventually leads to a crash in the Sahara desert.
In the desert, the narrator meets the little prince, who asks him to draw a sheep. Not knowing how to draw a sheep, the narrator shows him the picture of the elephant in the snake. To the narrator's surprise, the little prince recognizes the drawing for what it is. After a few failed attempts at drawing a sheep, the narrator draws a box in his frustration, claims that the box holds a sheep inside. Again to the narrator's surprise, the little prince is delighted with the result. (Summary by Wikipedia)