What quotes from To Kill a Mockingbird describe Jem's personality?
Take a look around enotes. There's plenty of links that provide quotes. Try the character analysis link, the the essential passages, or the summary. The summary analysis for each chapter is a great resource, and it almost always includes quotes from the novel itself. Chapters 1, 10, and 11 are also great resources if you want to find some quotes in the text yourself. Good luck!