I will not take what you need to give me. I will take what you want to give me.
It's easier to apologize than ask for permission.
One accurate measurement is worth a thousand expert opinions.
We're just getting started. We're just beginning to meet what will be the future-we've got the Model T.
I need something to compare this to. Could I please have a microsecond?
If it's a good idea, go ahead and do it. It is much easier to apologise than it is to get permission.