Arthur Park's Reviews > Einstein's Riddle: Riddles, Paradoxes, and Conundrums to Stretch Your Mind

This is a great book for knowledge and also at the same time for relaxing. This is because the book includes a lot of Riddles, Paradoxes, and Conundrums as the name suggests! The book is a really casual read for people that have extra time to learn something interesting! I recommend this book to anyone who likes to try and solve problems.