If one looks closely one sees that there is no essential difference between a beggar's livelihood and that of numberless respectable people. Beggars do not work, it is said; but then, what is work? A navvy works by swinging a pick. An accountant works by adding up figures. A beggar works by standing out of doors in all weathers and getting varicose veins, chronic bronchitis, etc. It is a trade like any other; quite useless, of course - but then, many reputable trades are quite useless.