I believe in positive thinking and visualization.

I believe in being strong when everything seems to be going wrong. I believe that happy girls are the prettiest girls. I believe that tomorrow is another day and I believe in miracles.

2004年9月13日，81岁的杨振宁在清华大学开始为本科生讲授普通物理。他说

创新始于质疑现状。

We must balance the need for energy security with the imperative of reducing emissions.

过去是一个异国，但我们都是它的公民。

最优秀的采石场不仅提取价值，更通过再生创造价值。