Yes, Prime Minister1986

Sir Humphrey Appleby:
You know what happens when politicians get into Number 10; they want to take their place on the world stage.

Sir Richard Wharton:
People on stages are called actors. All they are required to do is look plausible, stay sober, and say the lines they're given in the right order.

Sir Humphrey Appleby:
Some of them try to make up their own lines.

Sir Richard Wharton:
They don't last long.