Each of us needs a space to think deeply. The best space to think combines the comfort of paper and the advantages of digital technology—in a focused, distraction-free environment.

Our apps and platforms are addictive by design. We know this both because the tech titans behind them have admitted it publicly, and because the dominant apps and social media platforms use the same suite of techniques that are well-proven to ensnare us.

Even if there was no climate change… even if there was no problem with the environment… we would still need to replace the polluting infrastructure we have because it is too expensive and too outdated compared to modern, efficient, infrastructure.

All the market research we have done shows that consumers use diamonds to mark special moments in their lives because they are timeless, have been in the ground 3 billion years and are unique.

The idea of selfish philanthropy is a push against the notion of philanthropy as simply 'giving back.' That phrase implies that wealth was accumulated by taking something from society. But if you've built a successful business, you've contributed to society—you don't owe anything back.

Martial arts gave me my identity, my purpose, a passion for a pursuit in life. I wasn't particularly good at sports, I didn't have many friends, and was a bit of a loner. Martial arts changed everything. I finally found something I was good at... it became my identity... it helped my confidence... it gave me a social circle!

This is nothing to do with the 0.000001% who go on to be professional fighters – it's about the 99.9% of people who train because they enjoy it, and connect with it – and who apply the lessons they've learned to deal with the setbacks, failures, victories, challenges and tests they're going to get in work and life.

Limiting sleep to just 4-5 hours for one single night will drop levels of critical anti-cancer fighting cells, called natural killer cells, by 70%. That's a rather alarming state of immune deficiency, and it happens after just one night of short sleep.

I think people need to understand that building a business is really, really difficult. That shouldn't put anyone off, but there's no easy road to riches.

Neuroscience shows us that habit formation is based on how rewarding something is, not willpower. Willpower isn't even in the equation. We like to think of willpower is something, but it's more myth than muscle.

We see math as code and code as math. The real magic, and the key transition, comes from combining AI, programming languages, and mathematics—bringing all three pillars together.

I firmly believe that a society cannot heal from the wounds of war without accountability for serious international crimes. How can a society move towards a shared future while fundamental disagreements about the past and about responsibility for past crimes persist?