As far as the environment is concerned, I am becoming pessimistic because I do not see anybody stepping up and taking the long view approach. It seems like we're stuck in a tragedy of the commons where everyone is trying to contribute as little as possible to get out of this situation.

We are territorial, power-hungry and even more brutal than chimpanzees.

Chimpanzees, typically, kiss and embrace after fights. They first make eye contact from a distance to see the mood of the others. Then they approach and kiss and embrace.

Darwin wasn't just provocative in saying that we descend from the apes - he didn't go far enough. We are apes in every way, from our long arms and tailless bodies to our habits and temperament.

The role of inequity in society is grossly underestimated. Inequity is not good for your health, basically.

Although elephants are far more distantly related to us than the great apes, they seem to have evolved similar social and cognitive capacities.

We justify the inequalities by saying some people are just better and smarter than others and the strong should survive and the poor can die off.