A Christian is a perfectly free lord of all, subject to none. A Christian is a perfectly dutiful servant of all, subject to all.
基督徒是完全自由的主人,不受任何人支配。基督徒是完全尽职的仆人,受所有人支配。
Privacy protection is not an obstacle, but the foundation of trust.
数学是提出正确问题然后找到答案的艺术。