Truth in art

My own perception is that there are words and words have a logic of their own . When you start off with an expression ,however banal it may be, the poet’s own mind carries on with the logic of the words which relentlessly pursue truth and lead it towards little known recesses of the mind which hide this truth. Now truth is a controversial word ,just like wisdom and you may swap one for the other. But the essential thing is there is a logic of all logics which starts with words and as they move they take you to fascinating worlds whose existence you have not suspected. But the question you will ask is :You are saying this higher logic or whatever logic you call it is truth but what is the basis for this ? Apparently everything depends on what you think is truth and if you believe  Truth is something verifiable with facts and can be demonstrated again and again ,that is the definition within the conventional sense.How do we know that there is no other logic or truth beyond the logic which governs our lives and the physical phenomena