Often, the quote
If you want to master something, teach it.
is attributed to Richard Feynman (for example, [1, 2, 3] and many more).
However, some claim the quote is attributed to Singh Yogi [5, 6] (the latter provide a source that is not available).
And although the quote makes sense to be attributed to Feynman as it fits his world view in my opinion, is there any evidence that this quote can be attributed to Richard Feynman?
