“But two and two do equal four. Unless you give some strange, special meaning to equal. You can count it off for yourself: one two three four. If two and two really equalled three then everything would collapse into chaos. We would be in another universe, with other physical laws. In the existing universe two and two equal four. It is a universal rule, independent of us, not man-made at all. Even if you and I were to cease to be, two and two would go on equalling four.”
