"Here... is the Schrödinger equation ... and what it's actually saying is that the state of the world, that's this Greek letter Ψ there with the bracket around it... It's saying that the rate of change of it... depends on the current state of the world, when you do this operation on it and for the math nerds, this is a linear operation... and what that just means is, as Everett has pointed out and many others have known for a very long time is that, in some circumstances, two different solutions to this can do their parallel thing. We can talk at... length about the discoveries... about decoherence and why it is that sometimes these different parallel branches are unaware or each other, but my point is... if you give a science nerd colloquium... at a physics department... ideally, you should also start in the same way you start discussing this with your grandma. Just at a very high level... here are the cool ideas, and then you can go as deep as the audience or the listener wants, from there."

“So with each advance in understanding come new questions. So we need to be very humble. We shouldn't have hubris and think that we can understand everything. But history tells us that there is good reason to believe that we will continue making fantastic progress in the years ahead.”

“hat I had been missing... and what Feynman realized: physics is the ultimate intellectual adventure, the quest to understand the deepest mysteries of our Universe. ...t makes us see more clearly, adding to the beauty and wonder of the world ...he lens of physics adds more beauty to the world ...”

“It depends... on what you measure outrageousness in... If what you mean is that something is more extravagant if it... involves somehow having more particles, or reality being bigger... then sure. But... maybe the kind of simplicity that we should value with Occam's razor is rather that the math is simple. The equations are simple.”

“I... ended up at the, focusing on environmental issues. I wanted to... make our planet a better place, and felt that the main problem... that we didn't properly use... technology... I... was intrigued by... creating economic incentives that aligned... egoism with the common good. ...I soon grew disillusioned, concluding that economics was... intellectual prostitution... rewarded for saying what the powers that be wanted to hear. ...he book that changed everything: ...hat did Feynman see that I missed in high school? ...I sat down with... ... and started reading, "If... all scientific knowledge were to be destroyed... " ...I read on ...I felt like I was having a religious experience I finally got it!”

“Eratosthenes... knew that the Sun was straight overhead in... Syene at noon on the summer solstice, but that it was 7.2 degrees south of straight overhead in, located 794 kilometers farther north. He concluded... 794 kilometers corresponded to 7.2 degrees out of the 360 degrees... around Earth's circumference, so that the circumference must be... 39,700 km...”

“If I get a parking ticket, there is always a parallel universe where I didn't. On the other hand, there is yet another universe where my car was stolen.”