Very hungry caterpillar

Eric Karl, the famous American children"s artist and writer, has many beautiful books, but the most famous of all is "very hungry caterpillar." This amazing book has about 30 pages and no more than 200 words. 200 words that parents read aloud to their kids in twenty -four languages ​​for forty years.
What is the secret to the success of this book? In the bright, but very simple illustrations of the author that any two -year -old child can understand? In the wonderful transformation of the caterpillar into a beautiful butterfly? In the magical game of the child on the days of the week?
The answer is not known. It is only known that our children from two years old and sometimes to this day are happy to plunge into the magical world created for them by Eric Karl