不要批評別人，二十多年前來美國讀博，一位老師的話，現在還記得。

當時他讓學生讀一本書，然後寫評論。我剛來美國不久，還帶著中國習慣，就在書評中批判作者觀點，顯示自己。老師對我說，don't criticize others, use what they say to formulate your argument. He passed away a couple of years ago, but to this date I still remeber what he said to me.