The best thing you ever learned at school.

Quote from a teacher: 'if you have to give a demo and a feature isn't finished yet, don't show it and work your fucking ass of to get it done ASAP afterwards'

"your brains discard 2/3 of the information captured by your eyes, ears and nose. You naturally waste information, always pay attention to detail and do not waist more"

Best programming teacher I had... This was about taking requirements, and usually he used it when found a stupid bug in debugging...

"It's not about what you know, it's what you do with the knowledge"

Do not question human stupidity, you're just wasting your time.