"The companions of our childhood always posess a certain power over our minds which hardly any later friend can obtain." - Victor Frankenstein, Mary Wollstonecraft Shelly's Frankenstein.

"Nostalgia - it's delicate, but potent... in Greek, "nostalgia" literally means "the pain from an old wound." It's a twinge in your heart far more powerful than memory alone. This device… it's a time machine. It goes backwards, and forwards... it takes us to a place where we ache to go again... It lets us travel the way a child travels - around and around, and back home again, to a place where we know we are loved."

Don Draper, Mad Men.