diff --git a/QUOTES.md b/QUOTES.md
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@@ -79,3 +79,4 @@
 * A primary cause of complexity is that software vendors uncritically adopt almost any feature that users want. - [Niklaus Wirth](http://www.adrianmccarthy.com/blog/?p=15)
 * You can't be a senior software engineer unless you take ops seriously - [Source](https://twitter.com/esigler/status/778706455419465728)
 * Leave Things BETTER than you found them. - Robert Baden Powell
+* 90% of the bugs I produced were for one of the two reasons. 1) Doing multiple things at one place. 2) Doing one thing at multiple places [Source](https://twitter.com/CodeWisdom/status/998180793385209856)