We've transformed HIV from a death sentence to a manageable chronic condition, but prevention remains our greatest challenge. We need to reach the most vulnerable populations with the tools we have.

Money is not my first priority – I have always pursued what I am passionate about whether that will make me money or not, my fascination is learning and discovery more than being rich and powerful.

Emotions are the brain's way of making us pay attention immediately to what is most important so that we can react as quickly as possible. In evolution, that meant 'survival' – the rustle in the bushes may be our next meal or may make us its next meal – something that we have to chase, or run away from – and in either case, we don't want to have to stop and think.

We have turned life into a business model- and have somewhat forgotten the reciprocity we have with nature rather; we just see it as a resource. We have maintained societies for thousands of years based on a reciprocal relationship with nature, and we need to get back to that and need to have respect for our fellow earthlings rather than seeing them as products.

Racism, like sexism and any other form of discrimination, is an utterly futile exercise… nobody benefits. Societies are better for diversity in all forms, and time and time again we've seen that the more homogenous people become, the less they are able to flourish.