Here's an internationally well-known classic. See if you can guess the TITLE and AUTHOR:
So saying, he gave the spur to his steed Rocinante, heedless of the cries his squire Sancho sent after him, warning him that most certainly they were windmills and not giants he was going to attack. He, however, was so positive they were giants that he neither heard the cries of Sancho, nor perceived, near as he was, what they were, but made at them shouting, "Fly not, cowards and vile beings, for a single knight attacks you."
Good luck to all!
Congratulations to Sarah: Don Quixote by Cervantes is the answer.