I recently stumbled on a song's lyrics in which the 1st line says:
The great truth is there isn't one
Given the rest of the lyrics, I think the author meant that no great truth exists at all. Yet, I was wondering, in other contexts, could the sentence be interpreted like there isn't exactly one great truth, but either zero or a number of them? Would that grammatically make sense? If not, then what would be a correct phrasing for such a statement?
I am aware there is a logical flaw in the sentence, which is intentional, pretty much as Socrates' "I know that I know nothing". Tuffy's answer develops this point better than I would do. My question seems to be a bit ambiguous and I'll try to clarify it. I am French and in my mother tongue (among others), there is no word being both a cardinal number and a pronoun just like "one" is in English. Hence, I was wondering:
can the sentence "The great truth is there isn't one" be only equivalent to "The great truth is there isn't any"
or can the word "one" also be interpreted as the cardinal number with the sentence still correct in English language (i.e. we could rephrase the sentence as "There may be zero great truth, or two, or more, but just not one (unique) great truth")?