Tao Te Ching

“Opinion is like a pendulum and obeys the same law. If it goes past the center of gravity on one side, it must go a like distance on the other; and it is only after a certain time that it finds the sure point at which it can remain at rest.”

— Arthur Schopenhauer 1788 – 1860 CE via T. Bailey Saunders
from Parerga and Paralipomena, "Appendices" and "Omissions"