The one who adapts his policy to the times prospers, and likewise that the one whose policy clashes with the demands of the times does not.
Niccolo MachiavelliAny man who tries to be good all the time is bound to come to ruin among the great number who are not good. Hence a prince who wants to keep his authority must learn how not to be good, and use that knowledge, or refrain from using it, as necessity requires.
Niccolo Machiavelli