The Frog's Journey

Once there was a frog who wanted to find a princess. So he went on a journey, a very long, difficult trip. Every day he imagined his princess and obsessed about her. He kept walking all over the world, year after year after year. One day he came to a large tumultuous river. Can you help me cross the river? The turtle said, why do you want to cross? And the frog said, I must find my princess.