Don't just do something because it's a trendy idea and will make you a lot of money. The reason I say that is because any kind of venture involves going through difficult times. If you're doing something you are passionate about and really believe in, then that will carry you through.

I'm a pretty laid-back kind of guy. What I've always wanted to do is set up situations in our company where if people who worked there needed help, we would try to help them, and at the same token if the company needed help from people, they would help us. A kind of give and take.

I like that Ben & Jerry's is willing to speak out about social and political issues that aren't always safe - but are the right thing to do.

If you open up the mind, the opportunity to address both profits and social conditions are limitless. It's a process of innovation.

So much business is based on the belief that we should do whatever we can within legal limits to make as much money as we can. Ben & Jerry's was based on values, and we try to operate a business that not just sells ice cream but partners with all our stakeholders - whether that's suppliers or customers - to bring about a more sustainable world.

Startups are often very undercapitalised, but I found that to be very beneficial because it forces you not to throw money at problems. Instead, you learn all the nuts and bolts of what you're doing and become an expert.

It's to be expected that you make mistakes when you're breaking new ground.