You should just polish the tile; that is our practice. The purpose of practice is not to make a tile a jewel. Just continue sitting; that is practice in its true sense. It is not a matter of whether or not it is possible to attain Buddhahood, whether or not it is possible to make a tile a jewel. Just to work and live in this world with this understanding is the most important point. That is our practice. That is true zazen.
