Talks at the Yan’an Forum on Literature and Art Principal Contradictions of Socialist Society Criterion of Practice in Epistemology The Workers’ Opposition Interconnection Maxim Gorky (1868-1936) Chartist Movement Geneva International Congress of Socialist Students Political Power Grows out of the Barrel of a Gun Speech at the Symposium on Commemorating the 110th Anniversary of Comrade Deng Xiaoping's Birth.