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.

Ben & Jerry's is an indulgent dessert that should be eaten in moderation. You should not be replacing more than one meal a day with ice cream. We do not consider a pint or a tub of ice cream to be a single serving.

One of the great things about Ben & Jerry's for me is that not only is it delicious, but I get it for free.

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.

Ben & Jerry's evolved into what it is doing and is trying to transition its supply chain, but this is essentially retrofitting. In the social enterprise movement, we see companies whose essence, the products they make, the reason they exist from day one, is because these people see something out in the world that they cannot accept.

It's good to stand for something, to believe in something and base your business on values.

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.