4 ideas
Yanagi's method of appreciation is direct seeing (chokkan): meet the object with the eyes and hands before any knowledge of its maker, period, price or reputation intervenes. Names, signatures and art-historical categories come between viewer and thing and replace perception with judgment. So you should look first and learn about the object afterward. His advice is to pick the bowl up, feel its weight and turn it over.
Yanagi holds that the beauty of crafts (yō no bi) is inseparable from function. An object shaped to serve daily needs is pushed toward sound form, honest material and restraint. Objects made mainly to be looked at drift toward ornament and fussiness. Wear and handling complete such objects rather than degrade them, so a thing removed from use loses part of what made it beautiful.
Borrowing the Pure Land Buddhist term tariki (other-power), Yanagi argues that folk craftsmen achieve beauty through forces larger than themselves: inherited tradition, natural materials, local conditions and the demands of use. This contrasts with jiriki (self-power), the individual artist's reliance on personal genius and intention. In Yanagi's view, self-power tends toward strain and self-display. Other-power lets ordinary people make extraordinary things without being extraordinary themselves.
Making the same bowl thousands of times, cheaply and fast, does not deaden the work. It wears away hesitation, calculation and the wish to impress, until the hand moves with unforced freedom. The resulting natural irregularity and ease is a beauty that deliberate artistry cannot imitate, because trying for it reintroduces the self-consciousness it depends on escaping.