数学的精髓在于它的自由。
The essence of mathematics lies in its freedom.
我们做出的选择定义了我们是怎样的人,而不是我们所面对的环境。
"We are all in the gutter, but some of us are looking at the stars."
The advance of technology is based on making it fit in so that you don't really even notice it, so it's part of everyday life.