The quality of an organization is determined by the quality of its processes.

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

在独裁统治下，时间停滞不前。

To live fully is to accept both joy and sorrow.

错误的生活无法正确地过。

"We are all broken, that's how the light gets in."

我不是完美的，但我追求完美。