An Empty sort of mind is valuable for finding pearls and tails and things because it can see what’s in front of it. An Overstuffed mind is unable to. While the Clear mind listens to a bird singing, the Stuffed-Full-of Knowledge-and Cleverness mind wonders what kind of bird is singing. The more Stuffed Up it is, the less it can hear through its own ears and see through its own eyes. Knowledge and Cleverness tend to concern themselves with the wrong sorts of things, and a mind confused by Knowledge, Cleverness, and Abstract Ideas tends to go chasing off after things that don’t matter, or that don’t even exist, instead of seeing, appreciating, and making use of what is right in front of it….In the forty-eighth chapter of the Tao Te Ching, Lao-tse wrote, ‘To attain knowledge, add things every day.
To attain wisdom, remove things every day.’”
— from The Tao of Pooh by Benjamin Hoff