"The straightforward and easy path was to join the proprietary software world, signing nondisclosure agreements and promising not to help my fellow hacker.... I could have made money this way, and perhaps had fun programming (if I closed my eyes to how I was treating other people). But I knew that when my career was over, I would look back on years of building walls to divide people, and feel I had made the world ugly."

-- Richard Stallman (Open Sources, 1999 O'Reilly and Associates) https://github.com/llimllib/personal_code/blob/master/python...