道理的英语是truth。
例句：
1、他的说法似乎有点道理。
There appears to be an element of truth in his story.
2、其中含有很深刻的道理。
There's more than a grain of truth in that.
3、尽管有混用的比喻，这个判断还是有些道理的。
Despite the mixed metaphor, there is some truth in this judgement.
4、我们也明白了那句老话的道理：仁爱始于家庭。
We also realize the truth of that old saying: Charity begins at home
5、据我所知，他的话可能有一点儿道理。
For all I know, there may be a kernel of truth in what he says.
我的宝贝-童童
