On the generosity of nature.

Prof. Sydney Brenner titled his Nobel Lecture "Nature's Gift to Science".

[We note that the lecture begins with a joke: " It is not a lecture about one scientific journal paying respects to another..."]

I am neither a Gaiaist nor an animist, but, like Brenner, I am grateful for the generosity of nature, for had she not given us abundant atomic nuclei with magnetic moments, and hemoglobin with oxygenation-dependent magnetic susceptibility, we would not be able to use magnetic resonance imaging to view the brain in action.