A commoner asked a Zen Master, “What is the profound mystery of Zen?”
The Zen master answered, “The Analects of Confucius say: ‘I have concealed nothing from you’. In Zen, nothing is also hidden from you.”
“I still don’t understand,” replied the commoner, looking confused.
“Come with me for a walk to the mountain,” invited the Master. After few minutes walk, the Master asked, “Did you smell the fragrance of the osmanthus?”
“No,” the commoner answered.
“In that case, I have hidden nothing from you,” explained the Master.
Source [slightly adapted]