Technology alone won't solve our challenges; it takes vision, collaboration, and execution.
In mathematics, you don't understand things. You just get used to them.
I do not lack the courage to think a thought all the way through, and thus far I have encountered no thought that I have feared.
奥林匹克旗帜以白色为底,中央有五个交织的环:蓝、黄、黑、绿和红色。这个设计是象征性的;它代表着世界五大洲,因奥林匹克精神而团结在一起。