The only thing necessary for the triumph of evil is for good men to do nothing.
邪恶胜利的唯一必要条件是好人的无所作为。
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.
实现真正成功的唯一方法是为他人创造价值。
In mathematics, truth is somewhere out there in a place we don’t yet know, and the only way we can hope to find it is by exploring.
抽象的力量在于它允许我们忽略不相关的细节，专注于问题的本质方面。