And I know that every one will confess that it would be most praiseworthy in a prince to exhibit all the above qualities that are considered good; but because they can neither be entirely possessed nor observed, for human conditions do not permit it, it is necessary for him to be sufficiently prudent that he may know how to avoid the reproach of those vices which would lose him his state; and also to keep himself, if it be possible, from those which would not lose him it
In accordance to chapter 26, the idea of deception might be key to understanding this phrase. That is, the idea of knowing that a prince cannot adopt all the "good" traits that are stated above would most likely leave him to "act" as if he adopts all those traits. Thus, deceiving others through such false traits is something that would not only maintain his power in regards to the stability of his principality, but it would also avoid the different forms of uprisings that might take place because of realizations that are ought to take place within the analytical frameworks that the people are ought to subconsciously adopt while trying to make sense of their surroundings. Furthermore, it does seem that Machiavelli's words seem to highlight the fact that human nature is a precursor for the limitations for being "perfect" as it cannot handle such pressures that perfection induces naturally. Thus, the more a prince applies Machiavelli's advises of "awareness", the more probable the maintenance and sustainability of his position in power becomes.