The book, Great Communists and their Achievements , contains Jose Maria Sison's writings celebrating the lives and achievements of great revolutionaries—Karl Marx, Frederick Engels, Vladimir Lenin, Mao Zedong, and others; and how their teachings have inspired later generations to advance the revolutionary cause of the world's proletariat and people. It discusses the the fundamental principles that guide the working class in revolutionary struggle until now. These principles will remain vaoid and urgent to ensure the onward march of mankind towards communism in the historical epoch of socialism.