我追随着自然，却始终无法抓住她...
Sometimes I wish someone out there will find me
数学的美在于它让我们以一种既精确又深刻的方式看待世界，揭示支配万物的潜在秩序。
We are all alone, born alone, die alone, and—in spite of True Romance magazines—we shall all someday look back on our lives and see that, in spite of our company, we were alone the whole way.
Nature has provided us with incredible tools to study biology; we just need to know where to look.
"I think people believe in heaven because they don’t like the idea of dying, because they want to carry on living and they don’t like the idea that other people will move into their house and put their things into the rubbish."
中心地的等级越高，其服务的区域越大，此类中心地的数量越少。