"But often, in the world's most crowded streets, / But often, in the din of strife, / There rises an unspeakable desire / After the knowledge of our buried life: / A thirst to spend our fire and restless force / In tracking out our true, original course; / A longing to inquire / Into the mystery of this heart which beats / So wild, so deep in us--to know / Whence our lives come and where they go. --Matthew Arnold, "The Buried Life"
