At the beginning of Section 2, the narrator says that Dexter wants to possess the material accoutrements (the trappings or outward signs of success) that come with being affluent.
He wanted not association with glittering things and glittering people--he wanted the glittering things themselves.
In other words, Dexter longs for luxury, and he works to get it. At twenty-three years old, he borrows a thousand dollars to purchase "a partnership in a laundry." His laundry business eventually becomes well-known for its expertise in laundering English woolen golf stockings, Shetland hosiery, delicate sweaters, and women's lingerie. Before the age of twenty-seven, Dexter is the proud owner of five laundry branches, making him the owner of "the largest string of laundries in his section of the country." After making his money, Dexter sells his business and heads to New York.
As can be seen from the beginning of Section 2, Dexter is a man who prizes wealth and its material trappings above all else in life.