Quote from : New Grub Street Book

But just understand the difference between a man like Reardon and a man like me. He is the old type of unpractical artist; I am the literary man of 1882. He won't make concessions, or rather, he can't make them; he can't supply the market. I--well, you may say that at present, I do nothing; but that's a great mistake, I am learning my business. Literature nowadays is a trade. Putting aside men of genius, who may succeed by mere cosmic force, your successful man of letters is your skilful tradesman. He thinks first and foremost of the markets; when one kind of goods begins to go off slackly, he is ready with something new and appetising. He knows perfectly all the possible sources of income. Whatever he has to sell, he'll get payment for it from all sorts of various quarters; none of your unpractical selling for a lump sum to a middleman who will make six distinct profits.