It is when we act freely, for the sake of the action itself rather than for ulterior motives, that we learn to become more than what we were.
"The best children's books are the ones that don't talk down to children."
你的月亮无法发光是因为我。
现代密码学的挑战不仅是确保通信安全,而且要以既高效又可扩展的方式实现。