"Innovation is the key to solving many of the world's problems, and it requires freedom to experiment and take risks."
一个人为了保护自己的身体而做的事情，被视为合法行为。
The past is not a straight line but a tangled web.
The beauty of mathematics lies not only in its ability to describe the world but also in its power to reveal the hidden structures that govern it.
You don't write because you want to say something, you write because you have something to say.