- Niels Bohr, physicist, circa 1922. The American Institute of Physics credits the photo to AB Lagrelius & Westphal, which is the Swedish company used by the Nobel Foundation for most photos of its book series Les Prix Nobel.
While cutting a way through the bamboos we suddenly stumbled upon a block of lava (andesite). I was delighted to see it, for I had not previously seen as much as a pebble since we left Laikipia. As I examined it, my interest was roused.
John Walter Gregory, The Great Rift Valley
