"Any reading not of a vicious species must be a good substitute for the amusements too apt to fill up the leisure of the labouring classes"

In this quote, James Madison is recommending that reading is an useful option to the potentially damaging activities that often inhabit the spare time of the working class. He describes these activities as "vicious species," indicating that they are harmful to one's well-being. By contrast, reading is viewed as a favorable and efficient use of free time. Madison believes that reading can provide both home entertainment and education, making it a valuable pastime for those who might not have access to other types of leisure. In general, this quote highlights the value of promoting reading amongst the laboring classes as a way of improving their lives.