But, you know, any professor who stands before you should say the same thing about his or her subject. If they don't believe that, they shouldn't be teaching.

但是，你知道，所有站在你们面前的老师,可能都会这样介绍他的课程,如果他们不那样相信着，那他们就不应该教那门课了。

麻省理工公开课 - 固态化学导论课程节选

And in general, when people devote a lot of energy or money or expense to something, they are extraordinarily resistant to having it proven wrong.

一般来说，当人们投入的精力，金钱或成本越多时，他们就越不会相信自己是错的。

耶鲁公开课 - 心理学导论课程节选

Well, should we conclude, therefore, so nobody really believes that they're ever in dreamless sleep?

那么我们就应该得出结论，没有人真正相信,他们可以进入无梦的睡眠么？

耶鲁公开课 - 死亡课程节选

Now,there was even a group of nobles who believed that they could be elected, that if you had an election people would actually vote to restore the monarchy.

当时甚至有一群贵族,相信人们会选择君主制,相信如果人们有选举权,他们就会投票保留君主政体

耶鲁公开课 - 1871年后的法国课程节选

They had a certain time and date when the world was going to end.

他们相信在某个时间某个地点,世界末日就会出现。

耶鲁公开课 - 心理学导论课程节选