what is jim's explanation for his habit of accumulating work ?

J says that he likes work so much that he will stare at it rather than do it and not see it again,

It is not that I object to the work, mind you; I like work: it fascinates me. I can sit and look at it for hours. I love to keep it by me: the idea of getting rid of it nearly breaks my heart. You cannot give me too much work; to accumulate work has almost become a passion with me: my study is so full of it now, that there is hardly an inch of room for any more. I shall have to throw out a wing soon.