Many of St. Hildegard’s mystical visions end by recommending her readers to welcome her words with a kiss. In this chapter, I put forth an ecological model of sensing and knowing the world predicated on kissing. A kiss is markedly superficial, gliding or brushing on the surface of skin (even if it is the skin of the other’s tongue), touched by the lips. In this, it diverges from knowing based on a mental incorporation, assimilation, and digestion of the known. Kissed, the words and what they conjure are not swallowed up by the knower, but loved and preserved in their independence. The “watchful eyes” and “attentive ears” Hildegard attributes to whoever welcomes her visions with a kiss point toward a way of perceiving that is similarly nonviolent toward the perceived. Extreme devotion, in turn, is understood as “the kiss of the heart.” In this talk, we go on to elaborate an ecological theology of kissing predicated on a sensuous and phenomenologically rich relation to human and non-human (plant and animal, divine and mineral) and others protected from the threat of our sharp teeth with the fleshy veil of the lips.