Synthesized answer
The provided passages state that Arthur Schopenhauer's 1839 essay is "on free will and determinism" [Passage 1]. The text is described as "brilliant and elegant in its treatment" and "still remains relevant to modern readers" [Passage 1]. It is considered a "useful introduction to the philosopher's work" for students of philosophy or religion [Passage 1].
However, the passages do not explicitly state the central thesis of the text. They only identify the subject matter and its reception. Therefore, while we know the essay discusses free will and determinism, the specific argument or central thesis is not provided.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Essay on the Freedom of the Will by Arthur Schopenhauer Description: DIVBrilliant and elegant in its treatment, Schopenhauer's 1839 essay on free will and determinism still remains relevant to modern readers. A useful introduction to the philosopher's work for students of philosophy or religion. /div Categories: Philosophy Pages: 130 Snippet: DIVBrilliant and elegant in its treatment, Schopenhauer's 1839 essay on free will and determinism still remains relevant to modern readers. A useful introduction to the philosopher's work for students of philosophy or religion. /div