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General Essays and General Lectures
Hobbies and Miscellaneous Studies
Maybe I'd be happier if I didn't know it? Surprising Miscellaneous Studies that can be read in only three lines 500 times! There are many things in the world that I shouldn't know. But is that really true! This book suggests. If you say "Maybe it's better not to know", you can look at the content in three lines. It's up to you whether or not to take it away.