坚毅是对长期目标的激情和坚持。
无限的概念不仅仅是一个数学抽象，而是一个物理现实。
The moment of betrayal is the worst, the moment when you know beyond any doubt that you've been betrayed: that moment when you're glad to die.
Innovation in mining technology is essential to meet the world's energy demands.
The hardest part of returning to a truly wild environment is leaving behind the mechanical distractions of modern life.
生活的意义在于产生影响，而不是赚取收入。