With Django Unchained, when you're dealing with slavery, it's like a gymnastics routine with the highest amount of difficulty. Quentin Tarantino is not going to do a movie that's just going to lay there and be safe. There's going to be twists and flips.
If you make films, you're changing rhythm the whole time. You go from a quiet life to an absolutely turbulent life which is typical of moviemaking. And then you get back to your normal life and you have to have nerves of steel.