"But the kind of equanimity required has to be based on vigilant presence of mind, not on indifferent dullness. It has to be the result of hard, deliberate training, not the casual outcome of a passing mood. But equanimity would not deserve its name if it had to be produced by exertion again and again. In such a case it would surely be weakened and finally defeated by the vicissitudes of life. True equanimity, however, should be able to meet all these severe tests and to regenerate its strength from sources within. It will possess this power of resistance and self-renewal only if it is rooted in insight."
Compassion guards equanimity from falling into a cold indifference, and keeps it from indolent or selfish isolation. Until equanimity has reached perfection, compassion urges it to enter again and again the battle of the world, in order to be able to stand the test, by hardening and strengthening itself.
Sympathetic joy gives to equanimity the mild serenity that softens its stern appearance. It is the divine smile on the face of the Enlightened One, a smile that persists in spite of his deep knowledge of the world's suffering, a smile that gives solace and hope, fearlessness and confidence: "Wide open are the doors to deliverance," thus it speaks.
Equanimity, which means "even-mindedness," gives to love an even, unchanging firmness and loyalty. It endows it with the great virtue of patience. Equanimity furnishes compassion with an even, unwavering courage and fearlessness, enabling it to face the awesome abyss of misery and despair which confront boundless compassion again and again. To the active side of compassion, equanimity is the calm and firm hand led by wisdom — indispensable to those who want to practice the difficult art of helping others. And here again equanimity means patience, the patient devotion to the work of compassion.
"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."
"Love, compassion and sympathetic joy continue to emanate from the mind and act upon the world, but being guarded by equanimity, they cling nowhere, and return unweakened and unsullied."
"Just as all the streams of the world enter the great ocean, and all the waters of the sky rain into it, but no increase or decrease of the great ocean is to be seen"