Tirukkural 411: Heaing Knowledge

Wealth (gained) by the ear is wealth of wealth; that wealth is the chief of all wealth.

Image of Satguru Sivaya Subramuniyaswami
The mystic lives, and is taught to live, two-thirds within himself and only one-third in the external. In learning how to do this, the mystic is taught to become consciously conscious, or aware that he is aware.
—Gurudeva