Zero to One: Notes on Startups, or How to Build the Future is a 2014 book by the American entrepreneur and investor Peter Thiel co-written with Blake Masters. It is a condensed and updated version of a highly popular set of online notes taken by Masters for the CS183 class on startups, as taught by Thiel at Stanford University in Spring 2012.

The book is about the questions you must ask and answer to succeed in the business of doing what a startup has to do: question received ideas and rethink business from scratch.

You can’t escape the madness of crowds by dogmatically rejecting them. Instead ask yourself: how much of what you know about business is shaped by mistaken reactions to past mistakes? The most contrarian thing of all is not to oppose the crowd but to think for yourself.