Camus on the Spiritual

"Whatever we may do, excess will always keep its place in the heart of man, in the place where solitude is found. We all carry within us our places of exile, our crimes and our ravages. But out task is not to unleash them on the world; it is to fight them in ourselves and in others. Rebellion, the secular will not to surrender of which Barres speaks, is still today at the basis of the struggle. Origin of form, source of real life, it keeps us always erect in the savage, formless movement of history."

What does Camus mean when he marries excess and solitude in the church of the human heart?