This is only a paradox if you think of language as a way of describing some "real", static state of affairs in the world (look up " correspondence theory of truth"). There is no paradox here if we think of language as pragmatic, action directing, since it is obvious what the sentence should convey (look up "pragmatism"). Some people will argue that there is some sort of static meaning hidden behind the actual words which enters the consciousness of the listener, others will say that the meaning is only generated by the person hearing the words.
This is as philosophical of a question as it gets, and has been debated even more heatedly ever since Wittgenstein.
If you do not see that debating these questions is relevant and interesting, but would rather reduce all of philosophy to that first obvious-seeming and thus "not a real problem" position, then I wish you a good time bathing in your ignorance.
However, if you comprehend that what we take for granted in every area and discipline can be subjected to reasonable reflection, then I welcome you to the dark side. Nothing is clear, no knowledge absolute - many engineers seem to forget this while over-indulging in an overly simplistic world view :)