From The Mystery of Love:
The trees are part of the Goddess’s erotic manifestation. The central symbol of much of the ancient pagan cult in biblical Canaan was the Ashera tree. The Ashera is the feminine earth goddess erotically expressed in the image of the Ashera tree. In a wonderful phrase of Keats, “Even as the trees that whisper round the temple become soon as dear as the temple self.” For the pagan, the hills were literally alive with the sound of music. Nature is the music of divinity undressed to the human ear. Every hill, brook, tree, and blade of grass was invested with its own divine muse.