"It's important to write about difficult subjects in a way that children can understand."
以孩子们能理解的方式写一些困难的主题是很重要的。
Mathematics is a way of thinking, not just a collection of facts.
The world is the totality of facts, not of things.
创新是我们工作的核心;这将帮助我们应对提供可负担能源同时减少环境影响的双重挑战。