The famous 'cat's cradle' from Kurt Vonnegut's Cat's Cradle.
Kurt Vonnegut gifts us the following poem in Cat’s Cradle:
Bird got to fly;
Man got to sit and wonder, 'Why, why, why?'
Tiger got to sleep,
Bird got to land;
Man got to tell himself he understand.
It makes you think: it can be tough being human, can’t it?