There are many things that we still don't understand about the universe, right? Einstein struggled to bring quantum mechanics and gravity together and never succeeded, and that's a problem that to this day is not well understood. Well, maybe to comprehend some of these things, we need to augment our intelligence. If we do, who knows?

When I'm talking to somebody, I'll put a piece of paper on the table and I'll write what I call a conversation summary - notes about the conversation on the piece of paper. At the end of the conversation, I'll take a picture on my phone and give the other person the original piece of paper.

One of the things that got me transitioning from physical science to brain science was asking, Why do we understand so much about the universe?

If our brain is understanding some parts of the universe and not understanding other parts, and those understandings are about the laws of physics that our brains are built on top of, then it's kind of a loop, right?

One thing that I've been doing for a long time is to wake up really early. I try to get up around 4 or 5 in the morning, long before most of my lab members are up, which gives me some quiet time to really think without distraction. I think that's important.

For the last century of neuroscience, lots of people have tried to control neurons using all sorts of different technologies - pharmacology (drugs), electrical pulses, and so on. But none of these technologies are precise. With optogenetics, we can aim light at a single cell, or a set of cells, and turn just that set of cells on or off.

If you could map out a human brain, an open question is, if you simulated it, would it be you? Now, as we discussed earlier, we don't have a great definition or even a good technological handle to know whether something is conscious or not just by looking at it, so there's that aspect that we're not ready to answer, I would argue. But it raises very interesting questions about the nature of identity.