Most people we have worked with who have accomplished great things have an other-centred purpose, and that's never just 'make a lot of money…' – it could be to make women's lives easier, to close the inequality gap, to change the world, it's something which isn't strictly personal and selfish.

The easiest way to understand noise is by thinking about measurements. Suppose you are measuring a line with a very fine ruler. You will expect some variability such that you will not get the same number every time when you measure. That variability is noise. In the mathematics of accuracy, the expression for total error is very simple and quite compelling. It is bias-squared plus noise-squared. Bias and noise are both contributing to error and in that equation, they do so on the same basis.

I firmly believe that a certain level of strength and mental discipline is a prerequisite to excel in this sport. It's a challenging path, requiring years to adapt to the physical impacts, injuries, stringent diets, and discipline. You either love it or you hate it, and those who love it, do it.

I use the word repugnance to describe transactions that some people would like to engage in, that other people would not like them to; it's often hard to pin-down what harm the transaction does to anyone else.

I believe wisdom can be seen as a beacon, guiding us towards the noble, beautiful, and authentic aspects of life. It's the mark of a wise individual to have a clear understanding of their path, a path that not only promotes positivity but also steers others towards it. Moreover, wisdom bears an element of compression, of brevity - a distillation of knowledge, capturing the core, the very essence of understanding.

At one site, a mature man carrying a white flag was shot dead by an Israeli soldier. To those less experienced or with a 'soft' generally compassionate outlook, this might immediately seem a clear case of unlawful killing – a 'war crime'. However, the general offered a different perspective. He considered the terrain and highlighted the dilemma faced by the soldier in high-risk situations: might the soldier be genuinely uncertain over whether the white flag genuinely signified surrender?

You have to go into a very quiet place in your mind, away from the noise of the world, the noise of doubters, insecurities and your own self. You have to quiet your disbelief and create open mindedness to your own ability to succeed and overcome.

We're creating a different type of work. The average Dasher dashes for about four hours a week, and very often they're trying to save-up for something and use it as a supplement to their income. We believe that flexibility should exist, and that benefits earned should be portable and proportional to the amount of work you're doing on each platform.

His physics was the part of his attempt to find magic which actually worked! I see science similarly to that. This is still a magical and mysterious thing that we are able to understand the world in very powerful and predictive ways- that is the foundation of all of our technologies today.

We have become robots, instead of humans with feelings… with conversations… with letter writing, you know.

If people tell me, 'you're the mean shark', I say 'no I'm not, I'm the nicest shark – I tell the truth. And if you can't get past me on shark tank, wait until you get in the real world – you'll get shredded.

We have the unusual paradox of being both highly individualistic, yet in essence social. We exist in what I describe as a collective survival exercise.