Modern quarrying must marry the wisdom of geology with the innovation of engineering.

In the midst of winter, I found there was, within me, an invincible summer.

"Truth is like the sun; you can shut it out for a time, but it's not going away."

One can choose to go back toward safety or forward toward growth. Growth must be chosen again and again; fear must be overcome again and again.

译文：深夜独自思考，没人可以商量。劝你还是好好睡觉吧，穷富都是老天安排的。