毛泽东同志经常告诉我们,一切革命者,一切革命青年,都应该经风雨,见世面。革命者不可能在温室里成长,要在大风大浪里去锻炼自己。我们学游泳,不是学好了再下水,而是在游泳中学会游泳。我们干革命,也不是学好了再干,而是在干中学习,干起来再学习。干就是学习。每个革命者,每个革命青年,都要积极地参加无产阶级文化大革命,在斗争中学会进行阶级 Comrade Mao Zedong often told us that all revolutionaries and all revolutionary youth should weather the storm and see the world. It is impossible for the revolutionaries to grow in the greenhouse and to exercise themselves in the storm. When we learn to swim, we learn not to swim but we learn to swim in swimming. When we do a revolution, we do not learn it well and do it again. Instead, we learn in the dry and learn to do it. Doing is learning. Every revolutionary and every revolutionary youth must actively participate in the proletarian cultural revolution and learn to conduct classes in the struggle.