Chapter 18
Why Promises Are Political Weapons—And When Breaking Them Is the Smart Move
[1] CONCERNING THE WAY IN WHICH PRINCES SHOULD KEEP FAITH [1] “The present chapter has given greater offence than any other portion of Machiavelli’s writings.” Burd, “Il Principe,” p. 297. Every one admits how praiseworthy it is in a prince to keep faith, and to live with integrity and not with craft. Nevertheless our experience has been that those princes who have done great things have held good faith of little account, and have known how to circumvent the intellect of men by craft, and in the end have overcome those who have relied on their word. You must know…
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Key Quotes & Analysis
"it is necessary to be a fox to discover the snares and a lion to terrify the wolves. Those who rely simply on the lion do not understand what they are about."
Context: The fox and the lion
Force alone is blind to traps; cunning alone cannot intimidate predators.
In Today's Words:
Machiavelli is saying you cannot lead with only one skill. Pure force misses the trap. Pure cleverness cannot intimidate people who only respect strength. In a campaign or company, read the politics carefully and still be ready to act decisively when talk stops working. You need both the fox and the lion.
"Alexander the Sixth did nothing else but deceive men, nor ever thought of doing otherwise, and he always found victims; for there never was a man who had greater power in asserting, or who with greater oaths would affirm a thing, yet would observe it less; nevertheless his deceits always succeeded according to his wishes,[3] because he well understood this side of mankind."
Context: Alexander VI as modern example
Deception works when the deceiver reads how badly people want to believe.
In Today's Words:
Virtues are useful to display and dangerous to possess without escape hatches. Machiavelli says appearing merciful, faithful, humane, upright, and religious helps more than being those things rigidly at all times. Public virtue is part of the mask. The leader who cannot change when survival requires it will not survive long enough to be moral.
"to have them and always to observe them is injurious, and that to appear to have them is useful; to appear merciful, faithful, humane, religious, upright, and to be so, but with a mind so framed that should you require not to be so, you may be able and know how to change to the opposite."
Context: Appearance versus possession of virtue
The prince needs the mask of virtue and the ability to drop it.
In Today's Words:
Most people judge by what they see, not what they know, and winners get judged by the result. Appearance and success shield a prince from scrutiny. In modern public life, the brand travels farther than the ledger, and the crowd protects the image of power long after the few who know better stay silent.
"Every one sees what you appear to be, few really know what you are, and those few dare not oppose themselves to the opinion of the many, who have the majesty of the state to defend them; and in the actions of all men, and especially of princes, which it is not prudent to challenge, one judges by the result."
Context: Eye over hand; judgment by outcome
Public appearance and success shield the prince from scrutiny.
In Today's Words:
Most people judge by what they see, not what they know, and winners get judged by the result. Appearance and success shield a prince from scrutiny. In modern public life, the brand travels farther than the ledger, and the crowd protects the image of power long after the few who know better stay silent.
Thematic Threads
Keeping Promises
In This Chapter
Machiavelli explores when and whether leaders should keep their word
Development
This theme connects to the broader analysis of power throughout the work
In Your Life:
Consider how integrity, flexibility, the fox and the lion appear in your own professional environment
You now have the context. Time to form your own thoughts.
Discussion Questions
This is not a test. Five prompts guide you through the chapter, from how it opens to how it closes, so you notice context and rhythm rather than facts to memorize. Sit with each question in your own words. When you see "One way to read it," treat it as a starting point, not the only answer.
- 1
What does Machiavelli mean by saying a prince must be both fox and lion?
analysis • surfaceOne way to read it
Men contest by law and by force; a prince must use both natures. The lion terrifies wolves but cannot escape snares; the fox detects snares but cannot repel wolves. Relying on either alone is fatal in politics where others break faith first.
- 2
When does he say a prince is justified in breaking faith, and why?
analysis • mediumOne way to read it
When keeping a promise would turn against him and the reasons for making it no longer exist. Because men are bad and will not keep faith with you, you are not bound to keep it with them. Success still requires disguising the break so you appear reliable until deception serves no purpose.
- 3
How do Alexander VI and the unnamed Ferdinand of Aragon illustrate successful deception and virtuous appearance?
analysis • deepOne way to read it
Alexander deceived constantly and always found victims because men are simple and driven by present need. Ferdinand preached peace and good faith while violating both whenever keeping them would have cost him kingdom and reputation. Both succeeded because appearance and result mattered more to observers than inner virtue.
- 4
When have you seen a public leader keep the language of virtue while changing policy the moment conditions shifted?
application • mediumOne way to read it
Leaders who campaign on transparency then classify decisions, or promise unity while rewarding allies, follow Machiavelli's pattern: maintain the moral vocabulary the public expects while adapting action to necessity.
- 5
Can a leader maintain integrity in Machiavelli's world, or only the appearance of integrity?
reflection • deepOne way to read it
He says appearing virtuous is necessary while always observing virtue is injurious. A new prince especially cannot keep every moral rule and hold the state. Integrity in the full sense may be possible in private life, but princely rule forces selective performance and timely reversal.
Critical Thinking Exercise
Applying Keeping Promises
Analyze a current challenge in your professional life through the lens of when and whether leaders should keep their word.
Consider:
- •How does keeping promises affect your situation?
- •What strategic options does understanding integrity, flexibility, the fox and the lion reveal?
Journaling Prompt
How might a deeper understanding of integrity, flexibility, the fox and the lion change your approach to leadership?
Coming Up Next...
Chapter 19: The One Thing That Destroys Every Leader: How to Never Be Hated or Despised
In the next chapter, Machiavelli turns to another crucial aspect of power and leadership...





