Marcus du Sautoy has the wonderful gift of bringing the adventures of mathematical thinking to a wide audience. In "The Moonlight Seekers," he recounts his personal quest for the secret of symmetry, which ancient naturalists speculated would unlock the mysteries of nature upon its revelation. Du Sautoy begins his search on his 40th birthday; it will take him around the world for twelve months: from the Sinai Desert to the Mathematical Institute at Princeton University, from the gardens of the Alhambra to revolutionary Paris. Along the way, the reader encounters numerous brilliant yet eccentric mathematical minds, including the world-renowned number theorist John Horton Conway. However, the greatest challenge is "monstrous moonshine," the name of one of the most exciting mathematical discoveries.