which he was able to bring his illustrious qualities into play. The
achievement in each case was afterwards due solely to his own ability,
and the conquest which he made with difficulty was preserved with ease.
This exordium is not without practical importance, as will be seen when
we reach the application of the whole argument to the house of Medici at
the conclusion of the treatise. The initial obstacles which an innovator
has to overcome, meanwhile, are enormous. 'He has for passionate foes
all such as flourish under the old order, for friends those who might
flourish under the new; but these are lukewarm, partly from fear of
their opponents, on whose side are established law and right, partly
from the incredulity which prevents men from putting faith in what is
novel and untried.' It therefore becomes a matter of necessity that the
innovator should be backed up with force, that he should be in a
position to command and not obliged to sue for aid. This is the reason
why all the prophets who have used arms to enforce their revelations
have succeeded, and why those who have only trusted to their personal
ascendency have failed. Moses, of course, is an illustrious example of
the successful prophet. Savonarola is adduced as a notable instance of a
reformer 'who was ruined in his work of innovation as soon as the
multitude lost their faith in him, since he had no means of keeping
those who had believed firm, or of compelling faith from disbelievers.'
In this critique Machiavelli remains true to his positive and scientific
philosophy of human nature. He will not allow that there are other
permanent agencies in the world than the calculating ability of resolute
men and the might derived from physical forces.

Among the eminent examples of Italian founders who rose to princely
power by their own ability or by availing themselves of the advantages
which fortune put within their reach, Machiavelli selects Francesco
Sforza and Cesare Borgia. The former is a notable instance of success