Nine out of 10 times these guys will hit it-they'll be on something incredibly funny, but one out of 10, two out of 10, they'll fall flat on their faces. That's what makes them great actors: they take those chances, they don't play it safe.
Purring would seem to be, in her case, an automatic safety valve device for dealing with happiness overflow.
The more language is a living operation, the less we are aware of it. Thus it follows from the self-forgetfulness of language that its real being consists in what is said in it.