Models are only models, not the thing itself. We cannot therefore place too much reliance on them; nor can we afford to place too little.
模型只是模型，而非事物本身。因此我们既不能过分依赖它们，也不能完全不依赖。
Challenges are what make us grow; embrace them.
Education is the foundation of conservation—people protect what they understand.
The beginning is always today.
What you get by achieving your goals is not as important as what you become by achieving your goals. At your funeral people will not recall what you did； they will only remember how you made them feel.