20.Slaves, however, are very seldom inventive; and all the most important improvements, either in machinery, or in the arrangement and distribution of work, which facilitate and abridge labour have been the discoveries of freemen.
然而,奴隶很少有创造力;所有最重要的改进,无论是在机器方面,还是在工作的安排和分配方面,都是自由人的发现,这些改进促进和减少了劳动。机翻