In war, you're forced to survive. It's kill or be killed, it's the most basic human instinct. You have to unleash that aggressive shadow side of yourself. It gives you a profound sense of being alive, it becomes a dopamine slot machine.

The movements that sustain themselves the best over time are those that have culture at their core, that use art as a means of conveying a message, and use art-making as a means to mobilise a movement.

The idea of grit is being able to sustain effort and commitment to goals that take a really long time. That's the part of the equation that sometimes gets overlooked.

If you speak to heads of states and corporations about the costs, that will be incurred to protect the environment, they will never invite you again. If you come and speak their language about job-creation and profit, they will welcome you with open arms and tell you to start implementing.

At Dyson our philosophy has always been to invest in the long term. To power our 25 year pipeline of technology we have just announced a further £1.5 billion investment into new research and development on top of our current spending of £3 million a week. You cannot create disruptive technology without investing heavily in the long term.