... continual hard labor deadens the energies of the soul, and benumbs the faculties of the mind; the ideas become confined, the mind barren, and, like the scorching sands of Arabia, produces nothing; or, like the uncultivated soil, brings forth thorns and thistles. Again, continual hard labor irritates our tempers and sours our dispositions; the whole system become worn out with toil and fatigue; nature herself becomes almost exhausted, and we care but little whether we live or die.