I am a soft iron bar, which has been magnetized. Keep me in a strong magnetic field, and I shall be a powerful magnet, but bring me to this place, and I shall become soft iron again. I shall keep my magnetism as long as I remain in the company of other magnets, but I shall instantly lose it when I come into a place where there are no magnets. I shall be a magnet so long as I keep company with magnets, but no longer. I shall be a soft iron bar, and nothing more. Keep me company, and I shall keep my company; leave me alone, and I shall keep myself no longer. I shall be a magnet, and nothing more, so long as I remain in a magnetic field; but bring me to a place where there
