There is nothing in the world so enjoyable as a thorough-going monomania.
Agnes Repplier (1888). “Books and Men”
![There is nothing in the world so enjoyable as a thorough-going monomania.](http://cdn.quoteddaily.com/images/agnes-repplier/there-is-nothing-in-the-world-so-enjoyable-as-a-thorough-going-monomania.jpg)
There is nothing in the world so enjoyable as a thorough-going monomania.