As Will Rogers would have said, "There is no such thing as a free variable."
正如威尔·罗杰斯（WillRogers）所说，“没有自由变量之类的东西。”
People who say it cannot be done should not interrupt those who are doing it.
We are so accustomed to disguise ourselves to others that in the end we become disguised to ourselves.
好奇是智慧的开端。
When we damage our woodlands, we're not losing trees—we're erasing chapters of Earth's story.
The more you know, the less you understand.