"Are we alone in this world? Noone truly believes or knows. Thus giving us motivation, to live our life to the fullest everyday. As for all we know, it could very well be our last" Something I read years ago and I changed most of it to make it my own.
Plenty nice ones from Albert Einstein (or at least credited to him): "Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." "Insanity: doing the same thing over and over again and expecting different results." (Though in IT, that's exactly what we do...) I also love the ones from Winston Churchill, some nicer ones would be: "If you're going through hell, keep going." "The best argument against democracy is a five minute conversation with the average voter."