11 Profound Stephen Hawking Quotes That Will Make You Think

Stephen Hawking died on Wednesday at the age of 76 after battling complications of Lou Gehrig's disease.

Below are 11 quotes from the world-renowned, and often humorous, physicist.

“Quiet people have the loudest minds.”
“The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.”
“Life would be tragic if it weren't funny.”
“Intelligence is the ability to adapt to change.”
“People who boast about their I.Q. are losers.”
“One of the basic rules of the universe is that nothing is perfect. Perfection simply doesn't exist. Without imperfection, neither you nor I would exist.”
“We are in danger of destroying ourselves by our greed and stupidity. We cannot remain looking inwards at ourselves on a small and increasingly polluted and overcrowded planet.”
"I have noticed that even people who claim everything is predetermined and that we can do nothing to change it, look before they cross the road."
"I believe alien life is quite common in the universe, although intelligent life is less so. Some say it has yet to appear on planet Earth."
“My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.”
"It would not be much of a universe if it wasn't home to the people you love."

Rest in peace, Stephen Hawking. You will be missed.