学习数学的唯一方法就是做数学。

In the drone industry, safety always comes first.

Find more pleasure in intelligent dissent than in passive agreement, for, if you value intelligence as you should, the former implies a deeper agreement than the latter.

定言命令只有一条，那就是：要只按照你同时能够愿意它成为一条普遍法则的那个准则去行动。

最好的烘焙师是那些尊重传统但不害怕创新的人。