Equanimity is a perfect, unshakable balance of mind, rooted in insight. But in its perfection and unshakable nature equanimity is not dull, heartless and frigid. Its perfection is not due to an emotional “emptiness”, but to a “fullness” of understanding, to its being complete in itself.Its unshakable nature is not the immovability of a dead, cold stone, but the manifestation of the highest strength.
Nyanaponika Thera, The Four Sublime States
buddhism