Along with the possibility of extinction of mankind by nuclear war, the central problem of our age has therefore become the contamination of man's total environment with such substances of incredible potential for harm-substances that accumulate in the tissues of plants and animals and even penetrate the germ cells to shatter or alter the very material of heredity upon which the shape of the future depends.

The Choice, after all, is ours to make.

To understand the living present, and the promise of the future, it is necessary to remember the past.

I still feel there is a case to be made for my old belief that as man approaches the 'new heaven and the new earth' -- or the space-age universe, if you will, he must do so with humility rather than with arrogance.

Always the edge of the sea remains an elusive and indefinable boundary. The shore has a dual nature, changing with the swing of the tides, belonging now to the land, now to the sea.

Have we fallen into a mesmerized state that makes us accept as inevitable that which is inferior or detrimental, as though having lost the will or the vision to demand that which is good?

In every outthrust headland, in every curving beach, in every grain of sand there is the story of the earth.