My 'quick scan' involved reading the essay "On thinking for yourself" which was quoted from above. I specifically disagree with his general point here, essentially that you should avoid reading until your own ideas are fully developed. I do not believe this is universally true, especially in the context of this discussion, which is about becoming a better writer.

To get a feel for his other work, I read his essay "On Women", which is derogatory and sexist. Female philosophers such as Mary Wollstonecraft had already responded to similar patriarchal sexism (50 years before in her case) and as a philosopher one might have expected Schopenhauer to be familiar with similar intelligent women, and to have acknowledged their existence. His denigration of the capabilities of half the human race does not give me confidence in his other speculations.

[Edit] I also observe that Tolstoy stated "at present I am convinced that Schopenhauer is the greatest genius among men. ... It is the whole world in an incomparably beautiful and clear reflection" [0]. As someone who has slogged through the 27 chapters of philosophy in War and Peace, which are a case study of how to fail to understand how human society actually works, I am reluctant to uncritically accept claims from famous people that someone else is a genius.

[0] https://en.wikipedia.org/wiki/Arthur_Schopenhauer#Influence_...