Tirukkural 421: Fortress of Wisdom

Wisdom is a weapon to ward off destruction; it is an inner fortress which enemies cannot destroy.

Image of Satguru Sivaya Subramuniyaswami
The Self, the realization of God, Parasiva, is immanent now within everyone, only realizable according to the soul's evolution, which can be hastened through the practice of yoga.
—Gurudeva