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A good mathematician is someone who can see analogies between theorems. A great mathematician is someone who can see analogies between analogies.
The Vietnamese people deeply love independence, freedom, and peace. But in the face of a threat to their country's independence, the Vietnamese people would rather sacrifice everything than lose their country and be enslaved.
比较是幸福的最大杀手。如果一定要比较,就拿昨天的自己作为比较对象。
You see, in life, lots of people know what to do, but few people actually do what they know. Knowing is not enough! You must take action.