For A to sit down and think, What shall I do? is commonplace; but to think what B ought to do is interesting, romantic, moral, self-flattering, and public-spirited all at once. It satisfies a great number of human weaknesses at once. To go on and plan what a whole class of people ought to do is to feel one's self a power on earth, to win a public position, to clothe one's self in dignity. Hence we have an unlimited supply of reformers, philanthropists, humanitarians, and would-be managers-in-general of society.