墨迹仿佛未干（重读抗战家书）

Core Points - The letters written by Yuan Guoping reflect his deep commitment to the revolutionary cause and the sacrifices made for the nation, despite the personal hardships faced by his family [1][2][6] - Yuan Guoping expresses a sense of guilt for not being able to support his family financially while being dedicated to serving the country [2][3][6] - The letters highlight the emotional struggle between familial responsibilities and patriotic duties, showcasing the sacrifices made by individuals during times of war [2][4][5] Summary by Sections - Yuan Guoping's Background and Commitment - Yuan Guoping has not returned home for over a decade due to his involvement in revolutionary activities, and he feels a strong sense of duty towards his family and country [2][3] - His family has faced significant hardships, including hunger, while he is away fighting for the nation [2][6] - Emotional Conflict and Family Responsibilities - The letters reveal Yuan Guoping's internal conflict regarding his inability to provide for his family, despite his desire to serve the nation [2][3] - He acknowledges the sacrifices made by his family for his education and revolutionary activities, which adds to his feelings of guilt [2][3][6] - Philosophy of Sacrifice - Yuan Guoping's philosophy emphasizes the importance of selflessness and dedication to a greater cause, believing that true commitment requires personal sacrifice [6] - His final act of sacrifice during the "Wan Nan Incident" exemplifies his belief in prioritizing the mission over personal survival [6]