We have to prepare for what life could become in 40 years. We need to outline what is possible and what is impossible with the non-renewable resources of the Earth. What role will technological improvement play? Taking all this into account, what kind of life can we produce in the best way for 10 billion people? That's a problem that needs to be solved.

The sea is the universal sewer.

The happiness of the bee and the dolphin is to exist. For man it is to know that and to wonder at it.

We are human beings, and we have faith, and we have hope

It's terrible to have to say this. World population must be stabilized and to do that we must eliminate 350,000 people per day. This is so horrible to contemplate that we shouldn't even say it. But the general situation in which we are involved is lamentable.

I said that the oceans were sick but they're not going to die. There is no death possible in the oceans - there will always be life - but they're getting sicker every year.

The best way to observe a fish is to become a fish.