The beauty of virology is that viruses teach us the rules of life by breaking them.
听到了却没有亲眼见到，即使听得再多，也必有谬误；亲眼见到了却不能理解，即使记得再多，也必有错误；知道了却不去实际践行，就是知识再多，也必然困惑。
The mystery of the beginning of all things is insoluble by us; and I for one must be content to remain an agnostic.