现在这个数学书只有2种，一种啊你看完第一页你就看不下去了，还有一种你看完第一句话你就看不下去了。
这句话杨在不同场合说过多次，每次表述时可能有个别字的差异。
Writing, to me, is simply thinking through my fingers.
It is not the nature of magic to be either good or evil, but it is the nature of those who use it.
Great companies don't just adapt to change; they anticipate and drive it.
我们必须时刻用不同眼光来看待事物。
