Âm thanh chia sẻ

Clearly, movement assumes different forms. And so the dialectical method says that movement has two forms: the evolutionary and the revolutionary form. Movement is evolutionary when the progressive elements spontaneously continue their daily activities and introduce minor, quantitative changes into the old order. Movement is revolutionary when the same elements combine, become imbued with a single idea and sweep down upon the enemy camp with the object of uprooting the old order and of introd