He is convinced that virtue (where it is more than a mere pretence) is purely artificial; but not quite certain whether it is a useless trammel of appetites and passions that are advantageous to society, or a device creditable to the politicians who introduced it by playing upon the " pride and vanity " of the " silly creature man."
On the basis of that rule, no angler may gill net, trawl, or trammel net for commercial use.