一个人应该经常考虑他拥有的比他想要的多多少。
知识的真正方法是实验。
最可持续的采石场是能够平衡生产和环境管理的采石场。
If you're not willing to fail, you're not ready to succeed.
The joy of discovery is not in the recognition but in the knowledge that you’ve contributed something meaningful.