The history of a nation is, in essence, the history of its ruling class.
新的大国的崛起总是引起现有大国的担忧，因为它威胁到现有的权力平衡。
To understand the mind, study its operations in real life.
出自先秦《荀子·非十二子》。不被荣誉所诱惑，不为诽谤中伤之言所吓倒。说明不求虚荣、不做亏德之事，自然可以堂堂正正、问心无愧地做人。