Science is the greatest of all adventure stories, one that's been unfolding for thousands of years as we have sought to understand ourselves and our surroundings.

When general relativity was first put forward in 1915, the math was very unfamiliar to most physicists. Now we teach general relativity to advanced high school students.

Physicists have come to realize that mathematics, when used with sufficient care, is a proven pathway to truth.

Intelligence is the ability to take in information from the world and to find patterns in that information that allow you to organize your perceptions and understand the external world.

I like to think that Einstein would look at string theory’s journey and smile, enjoying the theory’s remarkable geometrical features while feeling kinship with fellow travelers on the long and winding road toward unification.

My best teachers were not the ones who knew all the answers, but those who were deeply excited by questions they couldn't answer.

No matter how hard you try to teach your cat general relativity, you're going to fail.