Whatever the expression, everyone is ultimately talking about the same thing — an unquenchable fire, a restlessness, a longing, a disquiet, a hunger, a loneliness, a gnawing nostalgia, a wildness that cannot be tamed, a congenital all-embracing ache that lies at the center of human experience and is the ultimate force that drives everything else. This dis-ease is universal. Desire gives no exemptions.
— Ronald Rolheiser, The Holy Longing