There are surprising turning points; there is the straw that breaks the camel's back, and you never know if your action could be the straw.

A teacher told me this story some time ago: She asked her students to line up in order of how much power they thought they had relative to the others in the class, and they all fought to be last in line. They didn't want to acknowledge that they had personal power.

How we frame the world - how we talk about it and define it - affects how we see things and how we live.

Our heavily meat-centered culture is at the very heart of our waste of the earth's productivity.

I had no identity [when I was 27] - I was terrified that somebody would ask me what I was doing, and I would have no answer.

Engagement is the good life. What could be more exciting than getting involved in something that you care about and joining with others and seeing something change? What could be more thrilling?

Little wonder that it can seem unthinkable to say "no, thanks" to the modern-day equivalent of our tribe - our fear-driven culture.