If human civilization is going to invade the waters of the earth, then let it be first of all to carry a message of respect.

The biggest obstacle was mixing abortion with overpopulation. These are two things that have nothing to do with each other.

When we return wild animals to nature, we merely return them to what is already theirs. For man cannot give wild animals freedom, they can only take it away.

With earth's burgeoning human population to feed we must turn to the sea with understanding and new technology. We need to farm it as we farm the land.

Through the window of my mask I see a wall of coral, its surface a living kaleidoscope of lilac flecks, splashes of gold, reddish streaks and yellows, all tinged by the familiar transparent blue of the sea.

We forget that the water cycle and the life cycle are one.

From birth, man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only to sink beneath the surface and he is free.