如果你不经历艰难时刻,你就无法到达美好的时光。
The human brain is a product of evolution, and so is the human mind.
"Children's books should be as diverse as the children who read them."
孔子说:“生来就知道的,是上等人;学习后才知道的,是二等人;遇到困难才学习的,是三等人;遇到困难也不学习的,这就是下等人了。”