The quote having it's own Facebook page is probably because of the changes they made fairly recently with people's profiles/interests.
I think the quote, an unlived life is not worth examining, is nice and deep. I take it to mean that, not just a boring life, biographies of young people are premature.
As an example, the 24 year old who chases a small bag of air around a grassy field, has a 5-book biography planned.[1]
The man who created the Red Army, lost the struggle against Stalin, inspired revolutionaries around the world and was brutally murdered aged 60... He managed a measly 3 part biography.[2][3]