We are the sum of our ancestors' struggles.
                    The question is, are we happy to suppose that our grandchildren may never be able to see an elephant except in a picture book?
                    最强大的两个战士是耐心和时间。
                    Collaboration across disciplines is essential for advancing our understanding of the universe.
                    I believe in a simple life, a life of discipline, a life of focus.
                    The only thing we have to fear is the absence of fear itself.