This quick writing activity helps students develop mental agility by constructing arguments quickly. It also prepares students for questions on exams.The instructor gives students a question or a quote from an author. For example, this activity was done with two quotes from George Decker and Carl von Clausewitz. Students are prompted to argue in favor or against. They write for 5 minutes and lay out an argument, give three points, and then conclude. Their writing is not collected or discussed. This activity develops quick analytical thinking and writing.