The Secret of Kendo

Once upon a time, a very proud young samurai visited a famous Kendo Master and asked him : 

"What is the secret of your Art?"

The Master quietly grabbed his shinai, twirled it above his head and strongly whacked the young man on the top of his head. 

Surely he received satori!

 In "Zen and Martial Arts" by Taisen Desshimaru

Don't you love these old Masters...