About this quote

It warns that pretending to know wrecks judgment faster than simply not knowing, because arrogance blocks learning and accountability. Ask where certainty has closed you off, admit the gaps, and replace bluster with steady, evidence-driven work that actually moves things forward.

When to use it

• In a meeting where someone dismisses facts, call them out: quote the line, demand evidence, and push for a testable plan.
• When preparing for a job interview, use the idea as a reminder to own what you don't know and show how you'll learn instead of bluffing.
• If you catch yourself defending a bad decision, pause, remember the line, and ask what information you're ignoring before doubling down.
• As a manager, make it a rule to challenge confident assumptions: require data, honest feedback, and a willingness to change course.