追求数学知识是一段永无止境的旅程。
采矿中的风险管理不是要消除所有风险 - 那是不可能的 - 而是要明智地理解和减轻风险。
The hardest decisions often yield the greatest rewards.
有时候你必须迷失自己才能找到自己。
No arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.