Charity is a virtue that requires a significant amount of effort and dedication. It involves genuinely caring for others and actively working to improve their situations, which can be demanding and challenging. This virtue is not just about giving material items but also about offering time, compassion, and support. The quote from Mister Monday by Garth Nix emphasizes that charity is a demanding virtue, highlighting the personal commitment needed to practice it effectively. It suggests that true charity involves consistent effort and a level of sacrifice, making it a labor-intensive yet highly valuable quality.