"We can do you blood and love without the rhetoric, and we can do you blood and rhetoric without the love, and we can do you all three concurrent or consecutive. But we can't give you love and rhetoric without the blood. Blood is compulsory. They're all blood you see."

-- from Rosencrantz & Guildenstern are Dead by Tom Stoppard

Ok, it's a play, but I have the script in book form and it's certainly a favourite quote so I dare say it will do.