I call children "our ultimate investment."

Habitual caution ties and binds us; it is as if we were dressed always in clothes and shoes that were several sizes too small.

As long as there is no control of population, the population explosion will make it so easy for politicians to dominate.

The difference between a good medicine and a poison is the dosage.

Probably, the secret is to be less complicated. We of course love to make complications - look at the way we live. We have this tremendous amount of information, and probably it is really not so necessary. Maybe if you just drink water, you are kind to people and walk a little bit it's all done already. But we cannot resist this sophistication.

The art of living is simply the art of using energy in an intelligent and creative way.

There is danger in everything that we do.