Here you will find the Poem Grace of poet Ralph Waldo Emerson
How much, preventing God! how much I owe To the defenses thou hast round me set: Example, custom, fear, occasional slow, These scorned bondmen were my parapet. I dare not peep over this parapet To gauge with glance the roaring gulf beelow, The depths of sin to which I had descended, Had not these me against myself defended.