"To write is to make a mark, to leave a trace, to say 'I was here.'"

Never stop learning; the day you think you know it all is the day you start falling behind.

孩子是最诚实的评论家；他们会直接告诉你他们的想法。

"A book is a journey of the mind."

科学家不是给出正确答案的人，而是提出正确问题的人。

实现不可能的唯一方法是相信它是可能的。