At each increase of knowledge, as well as on the contrivance of every new tool, human labour becomes abridged.
随着知识的每一次增长,以及每一种新工具的发明,人类的劳动都会得到简化。
当人们快乐时,他们不会注意到是冬天还是夏天。
金钱不会改变人,而是揭露他们的本性。