What's one thing I'm doing wrong that I know I'm doing wrong that I could fix that I would fix. It's like, you meditate on that, you'll get an answer—and it won't be one you want, but it'll be the necessary one.

I believe that truth will save the world. I believe that. So, you speak truthfully, and you watch what happens, and you take your consequences. And maybe you hope and have some faith that, in the final analysis, things will work out in your favor. Perhaps they will, and perhaps they won't. But that's faith, eh? That's faith. Faith isn't believing in things you regard as ridiculous, sacrificing your intellect; it's a decision. Will truth, beauty, and love save the world. Well, you can find out.

I believe that we will conclude that our response to the pandemic caused more death and misery than the pandemic itself.

And with regards to, let's say, the issue of child vaccination: Children have a unbelievably tiny chance of dying from COVID. I don't think there's any scientific justification for immunizing children under 12.

We don't have a single metric of humans that we can measure that better predicts how long they will live than how high their VO2 max is.

Most people sleep in an ambient bedroom temperature that is too high. You need to aim for a bedroom temperature of about 18/18.5 ºC, around about 65-68 ºF.

The quote is something like, 'I shall not waste my days trying to prolong them; I shall use my time.'

Imagine you're in your messy bedroom, and you're sitting on the edge of the bed, trying to have an honest dialogue with yourself, and the little voice says 'You know, it's pretty disgusting in here.' And you think, 'Well, I'm way above such trivial niceties as organizing my room ... Well, that's pride; that's arrogance. If you're above organizing what's actually yours, how in the world are you ever going to organize anything else?

We're built to walk uphill. And when you reach the pinnacle of the hill, you want to stop and appreciate the vision, but the next thing you want is a higher hill in the distance ... It's from the uphill climb that we derive our value.

I'm not convinced that the evidence that masks work is scientifically credible. It's certainly at least doubtful—and that's just masks.

I read a paper the other day suggesting that to prevent the transmission of one case of COVID, you have to lockdown a thousand people. Like, how is that justifiable?

If you're saying I want to be the absolute best fittest version of me that is humanly possible when I'm in my 80s, how much do I need to be training for that? The answer is probably one and a half to two hours a day.

I think the biggest challenge of fasting comes down to protein intake. And protein is, in my view... the most important, macronutrient ... When you are intermittently fasting, it is very difficult to get the right amount of protein in and in the right doses. And therefore, it's the most difficult to maintain muscle mass.

When I meet somebody who's in the last decade of their life, do you know how much they are thinking about this? It's all they're thinking about. It's all they're thinking about. Every minute of every day is a confrontation with their own mortality. The problem is they don't have much time to change the direction of the ship.

A 30-year-old, like you, has unbelievable potential to change the arc of your life. You have so much runway through manipulating nutrition and exercise and sleep and stress and all of these things to completely alter the disease trajectory of your life. The problem is... it's harder to find the motivation, because there are no reminders of your own mortality; you're superman.

There is a fundamental difference between AI and the printing press or the steam engine or the radio or any previous technology we invented. The difference is it's the first technology in history that can make decisions by itself and that can create a new idea by itself.

At the population level, the best answer as to why testosterone levels are declining... I believe that the best answer probably has to do with two things. One is increase in body weight and fat, body fat, specifically in men and some combination of reduced quality of sleep and sort of disruption to sleep.

If you're climbing a mountain, if you're only looking at the top, you're going to feel like you're getting nowhere, right? So if you want to climb a mountain, have in mind the mountain that you want to climb, but when you're climbing it, look at the next ledge.

Once you reach the age of 65, your mortality from a fall that results in a broken hip or femur is 15 to 30% .. There's a 15-30% chance you'll be dead within a year.

I don't drink sugar-sweetened beverages. That's definitely a place where I draw a line. So, I think there's something about liquid sugar that is more problematic than solid sugar. So, I'd rather eat my sugar and at least have the benefit of it being more slowly absorbed than drink it.