Anything that can help you wake up has Buddha nature. When I am alone and a bird calls me, I return to myself, I breathe, and I smile, and sometimes it calls me once more. I smile and I say to the bird, "I hear already." Not only sounds, but sights can remind you to return to your true self. In the morning when you open your window and see the light streaming in, you can recognize it as the voice of the Dharma, and it becomes part of the Dharmakaya. That is why people who are awake see the manifestation of the Dharma in everything. A pebble, a bamboo tree, the cry of a baby, anything can be the voice of the Dharma calling. We should be able to practice like that.
— Thich Nhat Hanh, A Lifetime of Peace by Jennifer Schwamm Willis