It's important not to indicate. People don't try to show their feelings, they try to hide them.
Robert De NiroI always go back to how people behave. If you watch how people actually behave in a situation, it's very simple and honest and contained. You don't need to use as much expression, as much feeling. Some characters will boil over, and that's another thing, but a lot of times I think you can just do very, very little.
Robert De Niro