The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
天下的事情有难易之分吗?只要去做,难的也会变容易;不去做,容易的也会变难
If you don’t fail now and again, you’re not trying hard enough.
I think goals should never be easy, they should force you to work, even if they are uncomfortable at the time.
衣服和食物不是天上掉下来的,是通过辛勤劳动换来的。
预测未来的最好方法就是创造未来。