Posted: Dec 26, 2018 10:47 pm
If you don't read the work itself and get second-hand analysis, then it can't speak to you.
I never violated this rule except for some content found in Allan Bloom's The Closing Of The American Mind, which is the book -- breaking the camel's back -- that made me go read the Big N in earnest. Also, Francis Fukuyama's book, The End of History and the Last Man, contributed to me committing to read Nietzsche.
I did get some tangible benefit and some not tangible. I do recommend his writing.