抽象的目的不是含糊不清,而是创建一个新的语义层次,在这个层次上可以绝对精确。
"The present is a fleeting moment, but the past is eternal."
Technology itself is neither good nor evil; the key lies in the people who use it.
历史学家必须公正,但不能冷漠。
在美国做一个黑人就是处于一种持续的愤怒状态。
Justice is not a destination, but a journey.
The moment you stop learning is the moment you stop growing.