過去を変えることはできないが、未来は変えられる。
Change starts with a single step, but it takes a collective effort to make it last.
我只是尽力做到最好。
我们都被过去的幽灵所困扰。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
The beauty of mathematics lies not in its complexity but in its simplicity and the way it reveals hidden truths.
