`` Calvin and Hobbes '' cartoonist Bill Watterson emerges in `` Pearls Before Swine '' `` Pearls '' cartoonist Stephan Pastis says the collaboration came quickly . ``I was working on a book about my life when I got this call from Stephen,'' said Pastis. Then came the matter of maintaining the secret . ` Artwork will be used as fund-raiser for Team Cul de Sac charity .
`` Calvin and Hobbes '' cartoonist Bill Watterson emerges in `` Pearls Before Swine '' `` Pearls '' cartoonist Stephan Pastis says the collaboration came quickly . ``I was working on a book about my life when I got this call from Stephen,'' said Pastis. ` Artwork will be used as fund-raiser for Team Cul de Sac charity .