The essence of mathematics lies in its freedom.
数学的本质在于它的自由。
煤炭开采的创新不是要重新发明轮子,而是要让轮子更高效、更环保。
The harder you work for something, the greater you’ll feel when you achieve it.
不要等着暴风雨自己过去;要在雨中跳舞。
When making something, always get a few extras — extra material, extra parts, extra space, extra finishes. The extras serve as backups for mistakes, reduce stress, and fill your inventory for the future. They are the cheapest insurance.