Then Mignon came up and confirmed what Barre had said in a long discourse, which he wound up by calling down upon his head the most terrible penalties if every word he said were not the exact truth.
But suddenly Don Quixote stopped eating, rose, and with inspiration in his eyes and voice, began a long discourse on knight-errantry, reviewing the great good it had done for mankind.
But instead he calmed himself, and began a long discourse on the virtues of knight-errantry, finishing it with an avowal of his intentions which, he swore, were to do good to all and evil to none.
Now take your wine--for woes a sure resource, And the best prelude to a long discourse.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "long discourse" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.