Ahead and to the west was our ranger station - and the mountains of Idaho, poems of geology stretching beyond any boundaries and seemingly even beyond the world.

Earth is ancient now, but all knowledge is stored up in her. She keeps a record of everything that has happened since time began. Of time before time, she says little, and in a language that no one has yet understood. Through time, her secret codes have gradually been broken. Her mud and lava is a message from the past.Of time to come, she says much, but who listens?

No Geologist worth anything is permanently bound to a desk or laboratory, but the charming notion that true science can only be based on unbiased observation of nature in the raw is mythology. Creative work, in geology and anywhere else, is interaction and synthesis: half-baked ideas from a bar room, rocks in the field, chains of thought from lonely walks, numbers squeezed from rocks in a laboratory, numbers from a calculator riveted to a desk, fancy equipment usually malfunctioning on expensive ships, cheap equipment in the human cranium, arguments before a road cut.

In your handsThe dog, the donkey, surely they know They are alive.Who would argue otherwise?But now, after years of consideration, I am getting beyond that.What about the sunflowers? What about The tulips, and the pines?Listen, all you have to do is start and There'll be no stopping.What about mountains? What about water Slipping over rocks?And speaking of stones, what about The little ones you can Hold in your hands, their heartbeats So secret, so hidden it may take yearsBefore, finally, you hear them?

The scientific world of the time was in the midst of a terrible ferment, with discoveries and realizations coming at an unseemly rate. To many in the ranks of the conservative and the devout, the new theories of geology and biology were delivering a series of hammer blows to mankind's self-regard. Geologists in particular seemed to have gone berserk, to have thrown off all sense of proper obeisance to their Maker... Mankind, it seemed, was now suddenly rather – dare one say it? – insignificant. He may not have been, as he had eternally supposed, specially created.