No, it doesn't work. Humans (at least) are very powerful metaphor users, and it is typically possible to discuss things for which there is no direct language in terms of metaphors (and analogies). We do this all the time, and it pretty much removes all bounds on what we can talk (and think) about with language.

Lots of poetry makes no sense if you consider it to be a series of words to be literally interpreted according to a grammar rules and a dictionary. But it can often hint at meanings and ideas that can't be expressed directly.

Of course, there are some things that always remain that are harder to get rid of. That's not "lack of language preventing you from thinking things", but rather "assumptions so deeply built into language that it is hard, though perhaps not impossible, to escape them".