<br>*Praise for the previous edition: <br> Without doubt, the work will have great influence. It should be in the hands of everyone, professional or otherwise, who is interested in scientific thinking. --The New York Times<br> Should prove a source of great pleasure and satisfaction. --Journal of Applied Physics<br> Succeeds brilliantly in conveying the intellectual excitement of mathematical inquiry and in communicating the essential ideas and methods. Journal of Philosophy<br> It is a work of high perfection, whether judged by aesthetic, pedagogical or scientific standards. It is astonishing to what extent What is Mathematics? has succeeded in making clear by means of the simplest examples all the fundamental ideas and methods which we mathematicians consider the life blood of our science. --Herman Weyl<br>