Moral malnutrition and mental poisoning do harm to people's mind, just as physical malnutrition does harm to health.
道德的营养不良和精神的中毒对人的心灵的危害,正如身体的营养不良对于身体健康的危害一样。
当最后一棵树被砍倒,最后一美元将失去意义。
The journey of scientific discovery is filled with challenges, but it is also incredibly rewarding.
理性是感性的镜子。
The writer must be able to superintend himself and criticize himself.
The proletariat is the universal class, the class whose radical chains are capable of bursting asunder.
可持续性不是一种选择;它是任何希望在长期内蓬勃发展的企业的必要条件。