"Suspicion is the cancer of friendship"
About this Quote
The intent is moral and psychological at once. Petrarch is warning that friendship isn’t preserved by constant vigilance but by a kind of chosen vulnerability. Suspicion feels like prudence, even like intelligence, but the subtext is that it’s often narcissism in disguise: the belief that one’s fears are truer than the other person’s character. Once you accept suspicion as a “reasonable” posture, you don’t just doubt your friend; you start auditioning them, turning intimacy into a trial.
Context matters. Petrarch writes from a 14th-century world saturated with factional politics, patronage, and reputation economies - where alliances could be transactional and betrayal had real consequences. His humanist sensibility tries to rescue inner life from that public corrosion. The line is also a poet’s diagnosis: love and friendship live on interpretation, and suspicion is the interpretation that eats all others. It’s not dramatic betrayal that ends most friendships; it’s the slow decision to read everything in bad faith.
Quote Details
| Topic | Broken Friendship |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Petrarch. (2026, January 18). Suspicion is the cancer of friendship. FixQuotes. https://fixquotes.com/quotes/suspicion-is-the-cancer-of-friendship-15557/
Chicago Style
Petrarch. "Suspicion is the cancer of friendship." FixQuotes. January 18, 2026. https://fixquotes.com/quotes/suspicion-is-the-cancer-of-friendship-15557/.
MLA Style (9th ed.)
"Suspicion is the cancer of friendship." FixQuotes, 18 Jan. 2026, https://fixquotes.com/quotes/suspicion-is-the-cancer-of-friendship-15557/. Accessed 12 Feb. 2026.












