FROM MEDITATOR.ORG

 It'

Supremely effective, supremely sacred, supremely spiritual, it
produces heaven and earth and humanity.

When you look at it, you do not see it, when you listen for it, you
do not hear it, when you grasp it, you do not find it, when you aim
for it, you lose it.

When you discuss it, that is not it; and when you look for it, it is
not there.

From “The book of Balance and Harmony".
13th Century Taoist Classic.