"Buy old masters. They fetch a better price than old mistresses"

This quote by William Maxwell Aitken is a funny means of stating that it is extra economically beneficial to purchase art work from old masters than it is to purchase relationships with old girlfriends. Aitken is suggesting that purchasing art work from old masters is a more reliable and rewarding financial investment than investing in a connection with an old mistress. He is indicating that art work from old masters will certainly appreciate in worth in time, while a partnership with an old girlfriend will not. Aitken is also recommending that buying art work from old masters is a much more secure and also stable investment than buying a connection with an old mistress. This quote is an amusing means of claiming that it is extra economically useful to purchase art work from old masters than it is to purchase partnerships with old mistresses.