I am an Englishman, and my name is John Smith. I was born in London, and am now thirt

I am a double, or duplicate, of the man whose double I am. I am his counterpart, his match, his counterpart, his duplicate, his duplicate

I am an English keeper of soft iron, and a permanent magnet. I keep soft iron from becoming a permanent magnet, but I cannot keep myself from becoming a soft iron keeper of…