The surest way to tame a prisoner is to let him believe he’s free.
Coal has powered our past, but we must be honest about its role in our future.
The greatest happiness for the laborer consists in having an abundant supply of the necessaries of life.
在每个故事中，都有一片等待被发现的真相。
The greatest mistake a man can make is to be afraid of making one.
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."