The four directions plus upward and downward constitute the spatial continuum (yu). What has gone by in the past and what is to come in the future constitute the temporal continuum (chou). The universe (these continua) is my mind, and my mind is the universe. Sages appeared tens of thousands of generations ago. They shared this mind; they shared this principle. Sages will appear tens of thousands of generations to come. They will share this mind; they will share this principle. Over the four seas sages appear. They share this mind; they share this principle.

(Lu Hsiang Shan)