Say you're going to town on business, any business you can think of that requires your immediate presence.

And, mind! don't stop on the way; go straight through: you'll find the trains fit in.

I won't add, 'Keep your mouth shut'; you'll do that; unless"-- he nodded significantly at the empty glass--"you take too much of that.
That's rather a weakness of yours, Lord Heyton: master it, or it'll master you.

Now, there's no time to lose.

I'll order a brougham for you.
Come, pull yourself together.