Barbarius quoted Frog and Toad: The Complete Collection by Arnold Lobel (Frog and Toad)
Once upon a time there were two good friends, a frog and a toad...
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The whole world is covered in buttons, and not one of them is mine!
— Frog and Toad: The Complete Collection by Arnold Lobel (Frog and Toad) (Page 34)
This is probably the best children's book ever written. And anyone who says otherwise clearly hasn't read it.