Ask HN: What are your favorite posts on the Internet?

I find these posts very useful...what are your favorites?

http://blog.samaltman.com/how-to-be-successful

https://steveblank.com/2011/09/22/how-to-build-a-web-startup-lean-launchpad-edition/

http://blog.samaltman.com/non-technical-founder-learn-to-hack