Is it a good idea for a CEO to take personal criminal liability for a non-profit? Such as "I, X , hereby certify, under penalty of perjury, that… A person I know has an idea for a mobile application but no skillset or money to build the application. I don't want to steal his idea so is there a widely accepted standard for example where I would take 90% of the profits for doing all the work and he would get 10% for just the idea?