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We imagine that human nature doesn't change. We like to say that but I don't think it's true because we have, in the course of the centuries, altered ourselves.

I do believe that peoples' natures can be changed, and they have to be changed if we want to live in this modern world and be a part of it.

Humanity evolves when we realise that animals have the same rights to the Earth as we do.

We are running ourselves into a damaged earth. But I am optimistic. I believe that we can change; we must change. As a human race, we are very young and quite primitive. The sooner we learn the greatness of humanity the better off we will all be.

As a species, we tend to be doers, forever shaping and reshaping the world to better suit our purposes.

We have become frighteningly effective at altering nature.

We humans have a tendency to see ourselves as completely different from other animals, and the way in which large segments of the public continue to reject the theory of evolution is just one symptom of that malaise.

You see, nature will do exactly what it must, and if we are a hindrance to its development, to even its destructive powers to reform itself and we are in a way, we will go.

As human beings we do change, grow, adapt, perhaps even learn and become wiser.

Every species becomes extinct; at some point, we will go extinct. The question is, as Homo sapiens, are we going to be able to adapt to the change that we're actually part of? We're causing such dramatic changes to the planet, so yes, you do stop and think, 'I wonder where we're headed.'