When you say 'yes' to others, make sure you are not saying 'no' to yourself.
事实是，最多人的最大幸福是衡量对与错的标准。
Well may the boldest fear and the wisest tremble when they contemplate the situation of our country.
当他们思考我们国家的状况时，最勇敢的人可能会害怕，最聪明的人可能会颤抖。
The deep, personal material of the latter half of your life is your children. You can write about your parents when they're gone, but your children are still going to be here, and you're going to want them to come and visit you in the nursing home.
物理学的美丽在于它能够用几个简单的方程来描述宇宙。
我们为新南开所抱的志愿，不过是‘了解中国，服务中国’这两句话。