我们不能一直用老方法做事。世界已经改变,我们也必须改变。
知识只有在它有助于人类解放时才有价值。
Quality is not a claim; it is a evidence.
"In mathematics, you don't understand things. You just get used to them."
改变生活:立即开始,华丽地去做,没有例外。