“Paradox means, literally, a finding that is contrary to received opinion or expectation. That immediately alerts us, since the purveyor of received opinion and expectation is the left hemisphere. I called it a sign that our ordinary ways of thing, those of the left hemisphere, are not adequate to the nature of reality. But — wait! Here it seems that the left hemisphere, with its reliance on the application of logic, is stating the opposite: that it is -reality- that is inadequate to our -ordinary ways of thinking-. Contrary to received opinion, it asserts, arrows do not move, Achilles cannot overtake the tortoise, there can never be a heap of sand, Theseus’ ship is not really his ship after all, Epimenides was inevitably talking nonsense. In other words, its understanding of paradox is — not that there must be problems in applying this kind of logic to the real world — but that the real world isn’t the way we think it is -because logic says so-. That looks like an interesting usurpation, a swapping of roles, with the new dispensation redefining who is Master, and who emissary.”

— Iain McGilchrist, The Master and His Emissary, The Divided Brain and the Making of the Western World, p. 140