"Without a rational assessment and critique of Mao Zedong thought and culture, its cancers will be anointed along with its charms and passed down in this spirit. The effect very likely will be catastrophic. Speaking personally, such cancers are already internalized as a kind of poisonous gas deep within myself. Because of this, I must hold fast to the fundamental position of “in the process of critiquing and assessing Mao Zedong thought and culture, making a serious accounting of myself.” My students, on the other hand, believe that there is no need for their teacher to spend his days in reflection and repentance. They see a teacher with many good qualities and see these as endowed upon him by Mao Zedong. This is, indeed, in some ways true. The key reason for this generational gap rests in the fact that the challenges we face are different: my challenge remains to cast off the influence, not only historical but actual, of Mao Zedong; their challenge, lies in the fact that they are totally estranged from the Mao era; they know nothing of it, so they must start from scratch to seek out its reasonable elements. Therefore, between teacher and student there is a divergence of opinions and ideas. But, I have to say, I am most antipathetic to their “price theory.” They agree that the Mao era was replete with problems but believe that these were a price that had to be paid. Whenever I hear of this price theory, I get all fired up; do they really know what price was paid? The death of millions or even tens of millions. In my view, the death of one person is one too many, let alone tens of millions. Can we be so blasé as to use “price” to “settle this up”? They haven’t personally experienced that time and think they can look upon it objectively – “people died, so they died.” And this touches upon another key problem: the life of a person, in my view is of the utmost import. I have many haunted memories, and my students criticize me for always wallowing in my personal recollections, for being unable to break free from them. But I still want to remind these young scholars: in summing up the thought and culture of the 1980s, there is one great lesson to be learned. The attempt to directly apply Western modernity without thinking through the problems of China, to believe that China’s developmental trajectory is simply to follow the road of Western modernity, will result in immense confusion. In the same vein, we absolutely cannot directly apply an unexamined Mao Zedong thought and culture to respond to the problems of contemporary China. This would lead not only to great confusion, but to catastrophe."
January 1, 1970
https://en.wikiquote.org/wiki/Mao_Zedong