True-False-False-True

From the time i started understanding the meaning of words true and false,I am little bit confused.I believe both the words which happens to be antonym of each other have the same meaning .at one time true become false and false become true.For example-we say we see from eyes open(true),we see from closed eye(false), but we also see dreams when our eyes are closed,if nothing we see blackness at least(but we see when eyes are closed).we believe that what we are seeing through closed eye are unreal,so seeing through closed eyes is a false statement.That means true or false is belief dependent(not independent).Our belief system itself is dependent.We believe(true) what we are taught to believe from our beginning of life.That means if we make our belief system independent and start believing in things which we want to believe then true and false will start contradicting each other or truth will take place of false and false will take place of truth. Ultimate goal of human life is independence that means ultimate goal of  human life is to convert  truth to  false and false to truth or more precisely knowing the meaning of true and false.