I thought that Tom was kind.
I get confused with such sutructures about the meaning, because this structure can have 2 meanings. It can mean "I thought he was kind and he turned out to be really kind man, or it can also mean I thought he was kind but I was clearly wrong, he is not kind at all.
Without a context or further explanation, you can't decide what it means. And the meanings are completeley opposite.
So, my question is: do such sentences "I thought+[clause]" automatically imply "I was wrong" or do they not imply anything like that?
And in the case of this sentence, does this sentence only means "I had the opinion that Tom was kind." (We don't know whether the speaker wants to say he was right or wrong in his original opinion.)