Mathematics classes: Feared and hated, at best they are boring. However, what is usually taught in school has as much to do with mathematics as a draisine does with an ICE train. Mathematics is much more than mental arithmetic and the times table. Certainly, mastering the tools of the trade is important. But it’s about more: recognizing patterns, understanding complex structures and relationships, transforming sober sequences of numbers into aesthetically pleasing images - that is what mathematical thinking is all about. The playful engagement with numbers, the awareness of their power in describing our world - that makes mathematics exciting. Let us approach the beauty of mathematics through perfect numbers and the squaring of the circle - and leave the calculations to calculators and computers.