如果一个人在黑夜里迷失了方向，这些知识是非常宝贵的。“Maybe there are five thousand roses in the world and you the same flower，but only you are my unique rose.”
Inevitably， the bourgeoisie and petty bourgeoisie will give expression to their own ideologies. Inevitably， they will stubbornly express themselves on political and ideological questions by every possible means. You cannot expect them to do otherwise. We should not use the method of suppression and prevent them from expressing themselves， but should allow them to do so and at the same time argue with them and direct appropriate criticism at them. We must undoubtedly criticize wrong ideas of every description. It certainly would not be right to refrain from criticism， look on while wrong ideas spread unchecked and allow them to monopolize the field. Mistakes must be criticized and poisonous weeds fought wherever they crop up. However， such criticism should not be dogmatic， and the metaphysical method should not be used， but efforts should be made to apply the dialectical method. What is needed is scientific analysis and convincing argument.
秋天的黄叶，它们没有什么可唱，只叹息一声，飞落在那里。Stray birds of summer come to my window to sing and fly away.And yellow leaves of autumn，which have no songs，flutter and fall there with a sigh.
