In other words, if I'm a rich, wealthy person in Corinth, I would say, "I'll be the local tax collector, and I'll guarantee you I'll send to Rome this amount of money for a year."

换句话说，如果我是科林斯的富人，我会说，“我想当本地税吏，我保证每年向罗马缴纳多少多少钱“

耶鲁公开课 - 新约课程节选

Hopefully within two years, probably not next year, but within two years, there will be positive psychology class offered, but I certainly cannot guarantee it.

但愿两年内，明年可能性不大，但是两年内，学校会再次开设积极心理学课程，但我无法保证。

哈佛公开课 - 幸福课课程节选