Almost all of them were formed in prison. Prison Notes recorded his thoughts and explorations on the international proletarian movement, ideology theory, cultural leadership theory, organic intellectual theory, aesthetics and history. He had a great influence on western Marxism and western left-wing intellectuals, such as French Marxist Althusser and others, on the founder of Orientalism, Said, and on the cultural research of Birmingham School in England, so there is a saying that Gramsci turned to cultural research in academic circles.
If prison notes represent Gramsci's unfinished political thinking, then prison letters are his experience of secular life. The 456 letters contained in Prison Letters not only continue the idea of Prison Notes, but also express Gramsci's yearning for free life and care for his relatives. And my personal views on reading, making friends, knowing people and dealing with the world, as well as the details of life in prison. You can feel the beating of a great and ordinary soul.