[Becoming a Writer] Why People Read Non-Fiction - Walter S. Campbell

All these reasons for reading non-fiction must be considered by the writer of non-fiction. His success will depend upon his ability to choose his subject wisely and to find a reader who can be brought to take an interest in it. His method and his skill are simply a combination of facts and feelings, ideas and emotions, of presenting fact with passion.
The writer of fiction must beware lest he present an emotion without a fact to justify it.
The writer of non-fiction must beware to not present a fact without an emotion to make it significant and interesting...
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