The cardinal responsibility of leadership is to identify the dominant contradiction at each point of the historical process and to work out a central line to resolve it.
Mao ZedongWhen we look at thing, we must examine its essence and treat its appearance merely as an usher at the threshold, we must, once we cross the threshold, grasp the essence of the thing.
Mao ZedongNow, there are two different attitudes towards learning from others. One is the dogmatic attitude of transplanting everything, whether or not it is suited to our conditions. This is no good. The other attitude is to use our heads and learn those things that suit our conditions, that is, to absorb whatever experience is useful to us. That is the attitude we should adopt.
Mao Zedong