"The brain is a three-pound mass you can hold in your hand that can conceive of a universe a hundred-billion light-years across". - Marian Diamond

In every human brain, there are as many neurons as there are galaxies in the known universe about 100 billion, drawn from 10,000 different cell types and woven into a three-dimensional tapestry, with threads of neural interconnections that number in the trillions.

Each one is tinder for the spark-of-life experience.

Memories are made of this gray matter. So are inspiration and imagination.

Electrochemical currents of intellect and emotion race though living labyrinths of neurons at 200 mph. When they are blocked, diverted or damaged, abilities atrophy. Personality disintegrates.

By exploring the life and death of these cells, researchers hope to learn how biochemistry becomes thought. - link