I wrote a post last year titled, When an elder dies, a whole library is lost. A reader wrote to ask me for the source, in the original words. I sent him to the TEDtalk video in the same post. But he insisted it was African and sent me an academic paper with the following quote:
"When a knowledgeable old person dies, a whole library disappears" -An old African proverb
Some more googling found a
source that refers to it as an Ethiopian saying.
If any reader is familiar with the Ethiopian (or other source) of the saying, please share. Thanks.