Who are our enemies and who are our friends? This is the first and foremost question of a revolution and it is also the first and foremost question o… - Mao Zedong

Wide, wide flow the nine streams through the land,
Dark, dark threads the line from south to north.
Blurred in the thick haze of the misty rain
Tortoise and Snake hold the great river locked.<p>The yellow crane is gone, who knows whither?
Only this tower remains a haunt for visitors.
I pledge my wine to the surging torrent,
The tide of my heart swells with the waves.

Today, the danger of a world war and the threats to China come mainly from the warmongers in the United States. They have occupied our Taiwan and the Taiwan Straits and are contemplating an atomic war. We have two principles: first, we don’t want war; second, we will strike back resolutely if anyone invades us. This is what we teach the members of the Communist Party and the whole nation. The Chinese people are not to be cowed by U.S. atomic blackmail. Our country has a population of 600 million and an area of 9,600,000 square kilometres. The United States cannot annihilate the Chinese nation with its small stack of atom bombs. Even if the U.S. atom bombs were so powerful that, when dropped on China, they would make a hole right through the earth, or even blow it up, that would hardly mean anything to the universe as a whole, though it might be a major event for the solar system.

人们要想得到工作的胜利即得到预想的结果，一定要使自己的思想合于客观外界的规律性，如果不合，就会在实践中失败。人们经过失败之后，也就从失败取得教训，改正自己的思想使之适合于外界的规律性，人们就能变失败为胜利，所谓“失败者成功之母”，“吃一堑长一智”，就是这个道理。