" When we put together two substances in nature that are dry, they cannot cohere; there is no way for them to join. When we add wetness, these two substances can bond; they can come together. In just that same way, the force of metta, lovingkindness, allows us to cohere, to come together within ourselves and with all beings. The beauty of this truth moved the Buddha to say that sustaining a loving heart, even for the duration of the snap of a finger, makes one a truly spiritual being. "
― Sharon Salzberg , Lovingkindness: The Revolutionary Art of Happiness