You don't go to other books and take little pieces because although say a romantic scene may have been many times before all the details of who it is, where it is, are so intertwined in that text that it's easier to write it from scratch.
Hence it will not do for the Landlord to possess too fine a nature. . . . He must have no idiosyncracies, no particular bents or tendencies to this or that, but a general, uniform, and healthy development, such as his portly person indicates, offering himself equally on all sides to men.