Books of morality are daily written, yet its influence is still little
in the world; so the ground is annually ploughed, and yet multitudes are
in want of bread. But, surely, neither the labours of the moralist nor
of the husbandman are vain: let them for a while neglect their tasks and
their usefulness will be known; the wickedness that is now frequent
would become universal, the bread that is now scarce would wholly
fail.--S. JOHNSON. _Adventurer_, 137.