Here’s an example of a beautiful long sentence that couldn’t have said what it said if it had said it shortly:
[A great author] writes passionately, because he feels keenly; forcibly, because he conceives vividly; he sees too clearly to be vague; he is too serious to be otiose; he can analyze his subject, and therefore he is rich; he embraces it as a whole and in its parts, and therefore he is consistent; he has a firm hold of it, and therefore he is luminous.
John Henry Newman, quoted by Russell Kirk in Educating for Virtue, which you can purchase from Eighth Day Books, and I highly recommend you do so. In fact, this sentence is quoted by Russell Kirk in an essay full of beautifully crafted longish sentences.
Tolle, lege
