If you want to understand a system, try changing it.
People are capable, at any time in their lives, of doing what they dream of.
儿童擅长在自由活动中建立规律。
每一次观测都让我们更接近回答关于宇宙的基本问题。
All God wants of man is a peaceful heart.
The happiest people are those who have found purpose while still appreciating life's simple joys.