Objects have always been carried, sold, bartered, stolen, retrieved and lost. People have always given things to other people.

孔子说：“我想不说话。”子贡说：“您如果不说话，谁教我们呢？”孔子说：“天说过什么？天不说话，照样四季运行，百物生长，天说过什么？”

The essence of mathematics is not to make simple things complicated, but to make complicated things simple.

我不考虑我的遗产。我只是努力做好工作。