Speed tourism in Italy

Leaving the beautiful little city of Sarzana on my way to Rome and meeting the lovely Maria time was short. I only had one day more, but wanted to see so much. It ended up with a couple hours in Pisa, since the train stopped there anyways. I walked around the city center, clicking photos of the tower. And then to spend the afternoon and the night in Florence. Florence is a beautiful city in the heart of Tuscany with a lot of history, and I wish I could spend more time there, but I need to save something for the next time in Italy right?