Every mystery solved brings us to the threshold of a greater one.

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

For the sense of smell, almost more than any other, has the power to recall memories and it's a pity we use it so little.

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.

Nowhere on the shore is the relation of a creature to its surroundings a matter of a single cause and effect; each living thing is bound to its world by many threads, weaving the intricate design of the fabric of life.

We cannot have peace among men whose hearts find delight in killing any living creature.

The human race is challenged more than ever before to demonstrate our mastery, not over nature but of ourselves.