唯一的好是知识，唯一的恶是无知。
There is only one good, which is knowledge, and one evil, which is ignorance.
The concept of legal obligation is central to the understanding of law.
每一个挑战都是伪装的机遇。
Never stop asking questions, because that's where discovery begins.
The novel is a great discovery: far greater than Galileo's telescope or somebody else's wireless.