Aesop for Children (1919)
55. THE FOX AND THE LION
A very young Fox, who had never before seen a Lion, happened to meet one in the forest. A single look was enough to send the Fox off at top speed for the nearest hiding place.
The second time the Fox saw the Lion he stopped behind a tree to look at him a moment before slinking away. But the third time, the Fox went boldly up to the Lion and, without turning a hair, said, "Hello, there, old top."
Familiarity breeds contempt.
Acquaintance with evil blinds us to its dangers.
Aesop for Children (translator not identified), 1919. Illustrations by Milo Winter (1886-1956). Available online at Project Gutenberg.