"Only as you do know yourself can your brain serve you as a sharp and efficient tool. Know your own failings, passions, and prejudices so you can separate them from what you see"
About this Quote
The subtext is almost managerial. Baruch isn’t asking for purity; he’s asking for inventory. Know what you’re prone to, so you can discount your own testimony when it’s compromised. It’s a tough-love approach to objectivity that sounds modern because it anticipates the language of bias before behavioral economics gave it a brand name. “Separate them from what you see” is the key move: he’s describing perception as a messy negotiation between reality and the self, and insisting that competence begins when you can tell the difference.
Contextually, Baruch lived in a world where decisions had consequence at scale: Wall Street booms, wartime production, political counsel. In those arenas, conviction is cheap and error is expensive. The line reads like advice to anyone with power, money, or influence: your greatest risk isn’t ignorance of the world, it’s ignorance of the lens through which you’re reading it.
Quote Details
| Topic | Self-Improvement |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Baruch, Bernard. (2026, January 17). Only as you do know yourself can your brain serve you as a sharp and efficient tool. Know your own failings, passions, and prejudices so you can separate them from what you see. FixQuotes. https://fixquotes.com/quotes/only-as-you-do-know-yourself-can-your-brain-serve-44786/
Chicago Style
Baruch, Bernard. "Only as you do know yourself can your brain serve you as a sharp and efficient tool. Know your own failings, passions, and prejudices so you can separate them from what you see." FixQuotes. January 17, 2026. https://fixquotes.com/quotes/only-as-you-do-know-yourself-can-your-brain-serve-44786/.
MLA Style (9th ed.)
"Only as you do know yourself can your brain serve you as a sharp and efficient tool. Know your own failings, passions, and prejudices so you can separate them from what you see." FixQuotes, 17 Jan. 2026, https://fixquotes.com/quotes/only-as-you-do-know-yourself-can-your-brain-serve-44786/. Accessed 13 Feb. 2026.









