出自北齐·颜之推《颜氏家训·文章》。书写文章要尊崇“三易”的原则，即文章内容要清晰明了，这是第一项。书写的文字要简单概要，这是第二项。书写的段落要读起来朗朗上口这是第三项。
最成功的领导者是那些将领导视为责任而非特权的人。
Collaboration across borders and disciplines is the key to unlocking breakthroughs in our field.
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.
Nonviolence is a powerful and just weapon which cuts without wounding and ennobles the man who wields it.