Tirukkural 876: Knowing the Quality of Hate

Though (one's foe is) aware or not of one's misfortune one should act so as neither to join nor separate (from him).

Image of Satguru Sivaya Subramuniyaswami
Attachment, for instance, holds our cells together; it is also the root of much suffering, for attachment to material objects or people keeps man's awareness externalized, incapable of expressing itself in full freedom.
—Gurudeva