There is about as much educational benefit to be gained in studying dolphins in captivity as there would be studying mankind by only observing prisoners held in solitary confinement.

However fragmented the world, however intense the national rivalries, it is an inexorable fact that we become more interdependent every day.

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.

The sea is the universal sewer.

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.

Man, of all the animals, is probably the only one to regard himself as a great delicacy.

In order to stabilize world population, we must eliminate 350,000 per day.