语言是一种自由创造的过程；其法则和原则是固定的，但生成原则的使用方式是自由且无限多样的。
Language is a process of free creation; its laws and principles are fixed, but the manner in which the principles of generation are used is free and infinitely varied.
The coal industry must unswervingly follow the path of safe, efficient, clean, and low-carbon development.
A tannery’s legacy should be measured by its environmental stewardship.
Society can and does execute its own mandates， and if it issues wrong mandates instead of right， or any mandates at all in things with which it ought not to meddle， it practices a social tyranny more formidable than many kinds of political oppression， since， though not usually upheld by such extreme penalties， it leaves fewer means of escape， penetrating much more deeply into the details of life， and enslaving the soul itself.
Positive emotions are not trivial luxuries, but instead may be critical necessities for optimal functioning.