幸福是通过美德获得的，是人自己意愿获得的善。
Happiness is secured through virtue； it is a good attained by man's own will.
The rise of a new great power is always a cause for concern among existing powers, as it threatens the existing balance of power.
能源公司有责任成为气候变化解决方案的一部分。
心理过程是生活的工具，其价值在于它们的用途。