Look here; be decent and fair with me.

I wouldn't offer you an affront--would I ?--even if I were a cad.

I wouldn't do it now, just when you're getting things into shape for me.
I'm not a fool, anyway.

This is in deadly earnest, I tell you, Mortimer, and I'm getting angry about it.

You've got to show your confidence in me; you've got to take what you want from me, as you would from any friend.