In New York they call subway the train. :P
(now you know!)

"If there is something to desire"
by Vera Pavlova
If there is something to desire,
there will be something to regret.
If there is something to regret,
there will be something to recall.
If there is something to recall,
there was nothing to regret.
If there was nothing to regret,
there was nothing to desire.
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Just one of those things that will surely drive you mad thinking about it.
It does make sense though, I can somehow sense some sort of peaceful sarcasm in it, but that's just me.
Look for it!