Duties are not performed for duty's sake, but because their neglect would make the man uncomfortable. A man performs but one duty - the duty of contenting his spirit, the duty of making himself agreeable to himself.
You need not expect to get your book right the first time. Go to work and revamp or rewrite it. God only exhibits his thunder and lightning at intervals, and so they always command attention. These are God's adjectives. You thunder and lightning too much; the reader ceases to get under the bed, by and by.
It is sound statesmanship to add two battleships every time our neighbour adds one and two stories to our skyscrapers every time he piles a new one on top of his to threaten our light. There is no limit to this soundness but the sky.