When you were a bird you knew the fairies pretty well, and you remember a good deal about them in your babyhood, which it is a great pity you can’t write down, for gradually you forget, and I have heard of children who declared that they had never once seen a fairy. Very likely if they said this in the Kensington Gardens, they were standing looking at a fairy all the time. The reason they were cheated was that she pretended to be something else. This is one of their best tricks.

J. M. Barrie (1860-1937) Scottish novelist and dramatist [James Matthew Barrie]

The Little White Bird, ch. 16 “Lock-Out Time,” Scribner’s Magazine, Vol. 32 (1902-10)
    (Source)

This book was the first appearance of (a prototype) Peter Pan. This portion of the serial is in ch. 16 of the fully collected novel (1902), and in ch. 4 of the abridged Peter Pan in Kensington Gardens (1906).