Tao Te Ching

“‘Like this cup,’ Nan-in said, ‘you are full of your own opinions and speculations. How can I show you Zen unless you first empty your cup?’”

— Mujū Dōkyō 無住道曉 1227 – 1312 CE
(Ichien Dōkyō )
”The Non-Dweller”
from Shasekishū (Sand and Pebbles)