Karl Liebknecht

"But Socialism, alone, can bring self-determination of their peoples."

"The failure of the Russian Socialist Republic will be the defeat of the proletariat of the whole world."

"Capitalism is war socialism is peace."

"Class struggle: external peace, international solidarity, peace among peoples. This is the sacred slogan of international socialist democracy that liberates nations."

"For capitalism, war and peace are business and nothing but business."