One of my favorites is "Time and Again" by Jack Finney. It takes place in Manhattan and goes back and forth between 1882 and the 1950s. It's really a cult book.
Alice HoffmanPeople want to ignore what they can't understand. They're looking for logic at any cost.
Alice HoffmanHe stepped off the pavement like a man jumping off a bridge, as calm as a swimmer with an ocean out below. Lucy had known what he was going to do the instant their eyes met. She'd know what he intended because she would have done the very same thing if she'd had his courage. Nothing was going to break his fall.
Alice Hoffman