Read this passage. Stanley was not a bad kid. He was innocent of the crime for which he was convicted. He’d just been in the wrong place at the wrong time. It was all because of his no-good-dirty-rotten-pig-stealing-g reat-great-grandfather!

He smiled. It was a family joke. Whenever anything went wrong, they always blamed Stanley’s no-good-dirty-rotten-pig-stealing-g reat-great-grandfather.

—Holes,
Louis Sachar

Even though Stanley had been wrongly accused of a crime, "he smiled." What does this tell you about Stanley's character?