i like the one about the Zen monk who lives outside a poor village.
One day a Zen monk walks into the village and there's great jubilation.
He inquires into what's happening and the villagers tell him that they've acquired a new horse; a symbol of wealth and status at the time. They tell him how great it is that they have this horse and all he does is shrug his shoulders:
He comes back a few days later and a group of the villagers have crowded around an injured boy. The zen monk finds out that the boy was riding the new horse, fell off and broke his leg. The villagers shakes their heads, worried and tell him how terrible this is. He shrugs:
A few weeks later the monk returns to the village; this time there is great commotion...a war has broken out between the territories. All the male villagers must go and fight, except for the boy with the broken leg, which has not yet healed. 'Isn't it wonderful that he broke his leg...now his life has been spared', exclaim the villagers. The monk smiles and shrugs: