The Dragon’s Tail

Isaac sat beneath an apple tree and watched a mob of farmers charge up the hill, pitchforks waving, heading to the dragon’s cave.
He closed his eyes and waited for the roar to come.
RRRRROOOOOOOAAAAAAAAAAAAAARRRRRRRR!
A pack of screaming singed farmers carrying scorched pitchforks ran down the hill, half-heartedly pursued by a massive scaly green lizard with wings.
Until it stopped, walked up to Isaac, and grumbled “What’s up with those clowns?”
Isaac shrugged. “I can calculate the motions of heavenly bodies, but not the madness of men.”
The dragon sighed, grumbled and walked away, his tail jostling the tree.