I learn something from criticism because when it comes from sources you respect you always examine it and learn.

I've got used to criticisms and, naturally, I try to make sure I don't listen to the more extreme ones because most of the people who have taken their rightwing extremist view of my life are people that I've never met.

Isn't the only hope for the planet that the industrialized civilizations collapse? Isn't it our responsibility to bring this about?

Nevertheless, the concept of sustainable development is now known - even amongst those who haven't accepted it - and it's recognized, debated and followed by an increasing number of businesses.

The combination of population growth and the growth in consumption is a danger that we are not prepared for and something we will need global co-operation on.

So, what we do as individuals matters. It adds up.

I've developed a huge regard for Toyota for its environmental awareness, for its immense commitment to research and development in this field, and for its leadership in developing hybrids which others are now following.