One afternoon while I was talking to a professor, my two-year-old daughter Melissa, wandered into a nearby classroom. There was a math class in progress and, to my dismay, Melissa sat down in the front row.

When I went in to get her, the instructor stopped me. "Young lady," he said, "I have been teaching calculus at this college for over 20 years. Not once in that time has anyone come to my class just because he or she wanted to. The child may stay."

一天下午，在我和一位教授说话的时候，我两岁的女儿玛丽莎转到了附近的一个教室里。那儿正在上数学课。更糟的是玛丽莎还居然坐在了前排的座位上。

当我走进去想把她抱出来时，上课的教授拦住了我。她说：“这位女士，我在这所大学里已经教了20多年的微积分。在这期间从未有人是出于自愿来到我的课堂，这个孩子可以呆在这里。”