你无法取悦所有人,所以做自己就好。
The best way to overcome fear is to face it with courage.
数学的真正乐趣在于发现的过程,而不仅仅是结果。
Don't worry about what anybody else is going to do. The best way to predict the future is to invent it.
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。