抽象是管理大型软件系统复杂性的关键。
Science is not just about facts, but about understanding the underlying principles that govern those facts.
Man is the only creature who refuses to be what he is.
Music can heal the soul, I hope my songs can bring people strength.
唯一存在的限制是你给自己设定的限制。
The first duty of the sovereign， that of protecting the society from the violence and invasion of other independent societies， can be performed only by means of a military force.