质量不是神话；它是一种事实。
人的激情通常比他们的理性更强大。
每一刻都是重新开始的机会。
数学的本质在于它的自由。
Safety must always come first in mining operations.
"La oscuridad siempre está ahí, solo hay que saber mirarla de frente."
Emancipate yourselves from mental slavery, none but ourselves can free our minds.
The right way to think is the way Zeckhauser plays bridge. It’s not that he’s so smart that he always knows the right answer. He just plays the odds better.