When you're in the editing room, the dangerous thing is that it becomes like telling a joke again and again and again. Eventually, the joke starts to not be funny. So you have to be careful that you're not throwing the baby out with the bath water.
They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.
True, a little learning is a dangerous thing, but it still beats total ignorance.
Ambition is a very dangerous thing because either you achieve it and your life ends prematurely, or you don't, in which case your life is a constant source of disappointment. You must never have ambition.
It's impossible to consider living without ideals. However, when ideas lead to ideology, that's a very dangerous thing. Ideology then leads to creating the image of an enemy, and it leads to the murder and massacre that we've seen since the beginning of time.