After Alsace and Lorraine were annexed by Prussia, Berlin issued an order that only German would be taught in schools. During his final French lesson, M. Hamel expressed his sorrow that the French people would lose the ability to speak and write in their own language. He praised French as the most beautiful, clear, and logical language, urging his fellow countrymen to preserve it, comparing it to a key to the prison they were about to enter. This made the people realize the true value of their language, reflecting their deep love for their country and culture through their attachment to the French language.