
“If you don't understand yourself you don't understand anybody else.”
Source: This is Where I Leave You
“If you don't understand yourself you don't understand anybody else.”
SGU, Podcast #170, October 22nd, 2008 http://www.theskepticsguide.org/podcast/sgu/170
The Skeptics' Guide to the Universe, Podcast, 2000s
Source: Al Capone Does My Shirts
“I don't understand you. You don't understand me. What else do we have in common?”
“If you can't explain it to a six year old, you don't understand it yourself.”
Variant: If you can't explain it to a six year old, you don't understand it yourself.
Source: Munich - Speech of April 12, 1922 https://archive.org/stream/TheSpeechesOfAdolfHitler19211941/hitler-speeches-collection_djvu.txt