The truth is: the natural world is changing. And we are totally dependent on that world. It provides our food, water and air. It is the most precious thing we have and we need to defend it.
存在就是矛盾。
Music is my life, and I live it every day.
If you are looking for something in your house， and you finally find it， when you’re done with it， don’t put it back where you found it. Put it back where you first looked for it.
The power of abstraction is what allows mathematics to transcend the limits of physical reality.