Changes in society are due chiefly to the development of the internal contradictions in society, that is, the contradiction between the productive forces and the relations of production, the contradiction between classes and the contradiction between the old and the new; it is the development of these contradictions that pushes society forward and gives the impetu6 for the suppression of the old society by the new.
Mao ZedongWe must learn to do economic work from all who know how, no matter who they are. We must esteem them as teachers, learning from them respectfully and conscientiously. We must not pretend to know when we do not know.
Mao ZedongHistory shows that wars are divided into two kinds-just and unjust. All wars that are progressive are just, and all wars that impede progress are unjust.
Mao Zedong