Synthesized answer
The provided passages do not contain information about what specific questions remain unanswered in "Parerga and Paralipomena." [Passage 1] describes the work's publication, its impact, and its general qualities such as intellectual vigor, literary power, and rich diversity. [Passage 1] also notes that the work helped secure lasting international fame for Schopenhauer. However, it does not detail any specific questions that are left unresolved within the text.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Parerga and Paralipomena by Arthur Schopenhauer Description: These works won widespread attention on their publication in 1851, and helped secure lasting international fame for Schopenhauer. Their intellectual vigour, literary power and rich diversity are still striking today. Categories: History Pages: 518 Snippet: see short description