1964 1 27, Mao Zedong commented that "the sky is old if there is affection" and said, "This is a sentence borrowed from Li He. Compared with the world, the sky is not old. " "Heaven is nature", "Nature and human society have the same process of occurrence and extinction".
Yes, the sky refers to nature as well as human society. Nature, human society, space and everything are always in a state of development and change, which is a ruthless and cruel objective law that is not transferred by human will.
"If it is sentimental, it will grow old", and Mao Zedong here means that it is not sentimental and it is not old. Yes, the sky is ruthless, so it will never age, never stop developing, never stop moving and never stop changing.
"The right path on earth is vicissitudes" is the conclusion.
It is precisely because of the vicissitudes of life that human society is developing, moving and changing endlessly. This is the "correct way of life", which is the eternal law of human society.
Because "the right path on earth is vicissitudes of life", the revolutionary people must "be brave in chasing the poor bandits"; Therefore, the revolutionary people must "carry the revolution to the end".