Tweet People won’t have time for you if you are always angry or complaining. Quote by Stephen Hawking. You May Also Like...Life would be tragic if it weren't funny.The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.There are two things a person should never be angry at, what they can help, and what they cannot.Let’s go invent tomorrow instead of worrying about what happened yesterday.People who boast about their I.Q. are losers.I have noticed even people who claim everything is predestined, and that we can do nothing to change it, look before they cross the road.There are some people who always seem angry and continuously look for conflict. Walk away from these people. The battle they're are fighting isn't with you, it's with themselves.My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.We should seek the greatest value of our action.