I think I'd like to be remembered as someone who really helped people to have a little humility and realize that we are part of the animal kingdom not separated from it.

Science demands objective factual evidence - proof; spiritual experience is subjective and leads to faith.

The awful thing is we don't respect each other.

But does that mean that war and violence are inevitable? I would argue not because we have also evolved this amazingly sophisticated intellect, and we are capable of controlling our innate behavior a lot of the time.

I think the most important thing is to keep active, and to hope that your mind stays active.

It may sound trite, but young people really are the future.

It's easy to become hopeless. So people must have hope: the human brain, the resilience of nature, the energy of young people and the sort of inspiration that you see from so many hundreds of people who tackle tasks that are impossible and never give up and succeed.