However, Liselotte was definitely interested in opera and theater and followed their development over decades, and was also able to recite long passages by heart. She was very well read, as evidenced by many of her letters, and had a library of more than 3,000 volumes, including not only all the popular French and German novels and plays of her time (Voltaire dedicated his tragedy Oedipe to her), but also most of the classical Greek and Latin authors (in German and French translation), Luther Bibles, maps with copperplate engravings, travelogues from all over the world as well as the classics of natural history and medicine and even mathematical works. She amassed an extensive coin collection, primarily of antique gold coins (it was not her father who inherited the 12,000 copies her father had inherited in Kassel, but her mother), she owned 30 books on coin science and corresponded with Spanheim and other numismatists. She also bought three of the recently invented microscopes with which she examined insects and other things. So she spent her days not only at court gatherings and writing letters, but also reading and researching. Her son inherited her collections as well as his father's art collection, but her little-interested grandson Louis, Duke of Orléans (1703–1752), was to dissolve the collection and scatter them to the wind.