So before I start work on a book, I'm like a pregnant mole - I obsessively tidy and order my closets and everything in my study. Because there's such a cascade of images and ideas that I'm grapping with mentally, I couldn't also be in a chaotic setting.

Words are such small things, like confetti in the brain, and yet they are color and clarify everything, they can stain the mind or warp the feelings.

All relationships change the brain - but most important are the intimate bonds that foster or fail us, altering the delicate circuits that shape memories, emotions and that ultimate souvenir, the self.

Fear is danger to your body, but disgust is danger to your soul.

When I go biking, I repeat a mantra of the day's sensations: bright sun, blue sky, warm breeze, blue jay's call, ice melting and so on. This helps me transcend the traffic, ignore the clamorings of work, leave all the mind theaters behind and focus on nature instead. I still must abide by the rules of the road, of biking, of gravity. But I am mentally far away from civilization. The world is breaking someone else's heart.

It's animal by animal that you save a species.

Nothing is more memorable than a smell. One scent can be unexpected, momentary and fleeting, yet conjure up a childhood summer beside a lake in the mountains; another, a moonlit beach; a third, a family dinner of pot roast and sweet potatoes during a myrtle-mad August in a Midwestern town. Smells detonate softly in our memory like poignant land mines hidden under the weedy mass of years. Hit a tripwire of smell and memories explode all at once. A complex vision leaps out of the undergrowth.