Well, in general, I apologize, but I can’t help but put my five copies on socks with sandals: in the summer came one Swissman – a sixty-year-old teacher of higher mathematics, already retired, well, I see, and he was wearing socks under the sandals. At my surprised look I said with a smile that it is practical - you walk around the city for half a day, then you go to someone for a visit, take off your socks, and your feet are clean)))