The most revealing detail of the Baron's changed outlook on life is found in sentence (35), which describes his active pursuit of a role in society by joining the Board of Education to help research and address causes of human misery.
The detail from the passage that best reveals the Baron's newfound perspective on living life is sentence (35). This sentence illustrates a significant change in the Baron's character, indicating a transition from idleness to a life of purpose and engagement with the broader issues of society. It shows he is ready to contribute to the community and undertake responsibilities that extend beyond his personal sphere.
His choice to invest time in reading, studying politics, and writing articles demonstrates an ambition to effect change, ultimately leading to his election to the Board of Education. Rather than being content with a life derived solely from his private income, the Baron decides to play a part in addressing 'human misery' and educating himself on the matters that require attention within the society. This reshaping of his daily life and purpose reflects his profound shift in perspective.