I learned that my pain could be my power.

Buying tools: Start by buying the absolute cheapest tools you can find. Upgrade the ones you use a lot. If you wind up using some tool for a job， buy the very best you can afford.

If we want to protect forests, we must first understand them.

科学家最重要的品质是坚持。

 工作让我们远离三种邪恶：无聊、恶习和贫困。

Leadership is about making tough decisions that align with long-term patient needs.

激发生命，让生命自由发展，这是教育者的首要任务。