The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all.

The books that we love, they love us back. And just as we mark our places in the pages, those pages leave their marks on us.

    ——杜抨击当时的国民政府。

"The writer's job is to be a witness to his time."

As we delve deeper into the quantum world, we find that topology is not just a mathematical curiosity, but a fundamental aspect of nature.