如果你愿意,可以错误地思考,但无论如何,为自己思考。
Think wrongly, if you please, but in all cases, think for yourself.
我们都是相连的,不仅彼此相连,还与土地、天空和海洋相连。
人生而自由,却无处不在地受着枷锁。
The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.