‘Sir,’ returned Bitzer, in a very business-like and logical manner, ‘since you ask me what motive I have in reason, for taking young Mr. Tom back to Coketown, it is only reasonable to let you know. I have suspected young Mr. Tom of this bank-robbery from the first. I had had my eye upon him before that time, for I knew his ways. I have kept my observations to myself, but I have made them; and I have got ample proofs against him now, besides his running away, and besides his own confession, which I was just in time to overhear. I had the pleasure of watching your house yesterday morning, and following you here. I am going to take young Mr. Tom back to Coketown, in order to deliver him over to Mr. Bounderby. Sir, I have no doubt whatever that Mr. Bounderby will then promote me to young Mr. Tom’s situation. And I wish to have his situation, sir, for it will be a rise to me, and will do me good.’ ‘If this is solely a question of self-interest with you—’ Mr. Gradgrind began. ‘I beg your pardon for interrupting you, sir,’ returned Bitzer; ‘but I am sure you know that the whole social system is a question of self-interest. What you must always appeal to, is a person’s self-interest. It’s your only hold. We are so constituted. I was brought up in that catechism when I was very young, sir, as you are aware.’ ‘What sum of money,’ said Mr. Gradgrind, ‘will you set against your expected promotion?’ ‘Thank you, sir,’ returned Bitzer, ‘for hinting at the proposal; but I will not set any sum against it. Knowing that your clear head would propose that alternative, I have gone over the calculations in my mind; and I find that to compound a felony, even on very high terms indeed, would not be as safe and good for me as my improved prospects in the Bank.’ ‘Bitzer,’ said Mr. Gradgrind, stretching out his hands as though he would have said, See how miserable I am! ‘Bitzer, I have but one chance left to soften you. You were many years at my school. If, in remembrance of the pains bestowed upon you there, you can persuade yourself in any degree to disregard your present interest and release my son, I entreat and pray you to give him the benefit of that remembrance.’ ‘I really wonder, sir,’ rejoined the old pupil in an argumentative manner, ‘to find you taking a position so untenable. My schooling was paid for; it was a bargain; and when I came away, the bargain ended.’ It was a fundamental principle of the Gradgrind philosophy that everything was to be paid for. Nobody was ever on any account to give anybody anything, or render anybody help without purchase. Gratitude was to be abolished, and the virtues springing from it were not to be. Every inch of the existence of mankind, from birth to death, was to be a bargain across a counter. And if we didn’t get to Heaven that way, it was not a politico-economical place, and we had no business there.