If the human heart becomes capable of comprehending divine secrets, the silent lips of Nature themselves would become speaking lips.

This couplet beautifully suggests that nature is never truly silent; we simply lack the spiritual sensitivity to hear its voice. The poet tells us that if our hearts become receptive, gentle, and worthy of life's deeper secrets, the seemingly mute world around us begins to converse. The rustling wind, the stars, and the trees will suddenly speak clearly to a soul tuned to their wavelength.