On: You are what you read, even if you don't always remember it

[keefle]

Of course! It's from a book containing a collection of old tales. It's called "one thousand tales and a tale" (the book only contains a hundred)

You can find it here. The tale I referenced is on page 61.

(Unfortunately I didn't find an English copy of the book but there might be one)

https://archive.org/details/ar108roman64/page/n60/mode/1up