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.
可持续性不是一种选择,而是生存的必要条件。
"I want my music to make people feel good."
企业家的功能是通过利用一项发明或更一般地说,通过利用一种未尝试的技术可能性来改革或彻底改变生产模式,以生产一种新商品或以新方式生产一种旧商品。