"Any prince who has come to depend entirely on promises and has taken no other precautions ensures his own ruin. Friendship that is bought with money and not with greatness and nobility of mind is paid for, but does not last and it yields nothing. Men worry less about doing an injury to one who makes himself loved than one who makes himself feared. The bond of love is one which men, wretched creatures that they are, break when it is to their advantage to do so; but fear strengthened by a dread of punishment is always effective." - Niccolo Machiavelli, The Prince, Chapter XVII.