14. Physically the Earth has had convulsions from its infancy. It has, however, entered upon a career of relative stability, of peaceable progress, which is accomplished by the regular return of the same physical phenomena, and the intelligent concurrence of man. But it is yet quite in the infancy of its work of moral progress: there will be the cause of its greatest commotions. Until humanity be sufficiently advanced toward perfection by intelligence and the practice of the divine laws, greater perturbations will be caused by man rather than by nature; that is to say, there will occur social and moral, rather than physical changes.