It had been a long day, starting as it had at 5am in Aydın. I was tired as I boarded the train, and would have loved to go to sleep straight away. Bu as we pulled out of Denizli, my carriage filled up with boisterous young Turks. The three in my carriage were very friendly, sharing food and practising their English. This mainly consisted of the two boys pointing at the girl and saying "prostitute!", which she responded to by pointing at one of the boys and saying "wanker!".
Night fell over central Turkey. In the morning, I woke up feeling angry with my guide book, which claimed that buses were always better than trains in Turkey. This was nonsense - I'd slept fantastically, and as I had a morning coffee in the restaurant car, we were rumbling along by the Sea of Marmara, with curls of mist rising from the waters. This was far better than the night bus to Denizli.
We got to Istanbul at 10.15am. We were two hours late but I was in no hurry. At Haydarpaşa station, I looked at the departures board, saw that a train to Tehran was leaving soon, and thought about what a fantastic journey that would be. But I had to leave Asia behind, and I got on a ferry back across the Bosphorous, to return to Europe for the time being.