The practice of arithmetic tells us the principle of arithmetic, not just memory and continuous calculus.
数算练习告诉我们算术运算的原理，而不是单单的记忆和不断演算。
【译文】 孔子说：“君子帮助人取得成绩，不促使人陷入失败。小人相反。”
最好的故事是那些让你感觉与更伟大的事物相连的故事。
In the quest for understanding the cosmos, every question answered leads to a dozen more.
If you don't design your own life plan, chances are you'll fall into someone else's plan. And guess what they have planned for you? Not much.