“If you can't explain it to a six year old, you don't understand it yourself.”
Albert Einstein (1879–1955) German-born physicist and founder of the theory of relativity
Variant: If you can't explain it to a six year old, you don't understand it yourself.
“i can't understand her"
well son, you might as well try to understand the sun”
Robert Jordan The Fires of Heaven
Source: The Fires of Heaven
“Don't criticize what you can't understand.”
Bob Dylan (1941) American singer-songwriter, musician, author, and artist
“It is easy to understand God as long as you don't try to explain him.”
Joseph Joubert (1754–1824) French moralist and essayist
“Science is what we understand well enough to explain to a computer. Art is everything else we do.”
Donald Ervin Knuth Things a Computer Scientist Rarely Talks About
Foreword to the book A=B http://www.cis.upenn.edu/~wilf/AeqB.html (1996) <br class="br">Source: Things a Computer Scientist Rarely Talks About
Steven Novella (1964) American neurologist, skepticist
SGU, Podcast #170, October 22nd, 2008 http://www.theskepticsguide.org/podcast/sgu/170 <br class="br">The Skeptics' Guide to the Universe, Podcast, 2000s
“In general, I feel if you can't say it clearly you don't understand it yourself.”
John Rogers Searle (1932) American philosopher
Paul Gauguin (1848–1903) French Post-Impressionist artist
Source: 1890s - 1910s, The Writings of a Savage (1996), p. 130: quote in 1898
