"There is nothing so selfish and heartless as the displeasure, or at least the kind of contemptuous aversion, with which men of distinction and wealth sometimes regard Sundays and holidays. Even the choice of the seventh day is certainly the wisest which could have been made. However it may seem to lie, and in one respect really may lie, within the power of the will to shorten or lengthen the usual period of labour, I am thoroughly convinced that the six days are the really true, fit, and adequate measure of time for work, whether as regards the physical strength of man or his perseverance in a uniform occupation. There is also something humane in the arrangement, by which those animals which assist man in his work rest along with him."