The right of a nation to kill a tyrant in case of necessity can never be doubted.
Energy transformation is a challenge but also an opportunity; the key lies in how to seize it.
以孩子们能理解的方式写一些困难的主题是很重要的。
He who is not contented with what he has,would not be contented with what he would like to have.
每一次表演都是与人们在更深层次上建立联系的机会。
在数学的世界里,每个问题都会引出另一个问题,创造出一个连接所有科学领域的无尽知识网络。