Look closely at nature. Every species is a masterpiece, exquisitely adapted to the particular environment in which it has survived. Who are we to destroy or even diminish biodiversity?

But I feel music has a very important role in ritual activity, and that being able to join in musical activity, along with dancing, could have been necessary at a very early stage of human culture.

When you have seen one ant, one bird, one tree, you have not seen them all.

Ants make up two-thirds of the biomass of all the insects. There are millions of species of organisms and we know almost nothing about them.

Far more important throughout the rest of science is the ability to form concepts, during which the researcher conjures images and processes by intuition.

From the freedom to explore comes the joy of learning. From knowledge acquired by personal initiative arises the desire for more knowledge. And from mastery of the novel and beautiful world awaiting every child comes self-confidence.

It's obvious that the key problem facing humanity in the coming century is how to bring a better quality of life - for 8 billion or more people - without wrecking the environment entirely in the attempt.