每一个故事都是一段旅程，而每一段旅程都会改变旅人。
Problem solving is the central activity of intelligent systems.
Technology can revolutionize mining, but only if we have the courage to embrace it.
The true teacher defends his pupils against his own personal influence. He inspires self-trust. He guides their eyes from himself to the spirit that quickens him. He will have no disciple.
The past is always tense, the future perfect.