The most important thing is to have a vision of what you want to do and then to have the persistence to carry it out.

If you want to live a happy life, tie it to a goal, not to people or things.

Every failure is a valuable experience.

任何牺牲基本自由以换取短暂安全的人，最后既得不到安全也得不到自由。（放弃基本的自由以换取苟安的人，终归失去自由，也得不到安全。）