We don’t just mine stone; we shape the foundations of communities.
The best way to appreciate your job is to imagine yourself without one.
The principles of conditioning apply equally to all species.
我不害怕失败，我害怕不去尝试。
了解自己的一个好办法是，仔细地分析自己做的会惹怒其他人的每一件事情。
我唯一感兴趣的是人类这种动物以及它的样子。