Synthesized answer
The provided passages do not explicitly state the central thesis of "Parerga and Paralipomena."
However, the passages do mention that the works, published in 1851, won widespread attention and helped secure lasting international fame for Arthur Schopenhauer [1]. They are described as having intellectual vigor, literary power, and rich diversity [1].
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