Truth has many dimensions, and the way you arrive at truth in complex situations is through many perspectives.

One of the wonderful things about Internet is its like a salon. It brings people together from different intellectual walks of life.

Memory is everything. Without it we are nothing.

Has it ever struck you ... that life is all memory, except for the one present moment that goes by you so quickly you hardly catch it going? It’s really all memory ... except for each passing moment.

There are cells in the brain that respond to faces. This is one of the reasons that I deal with portraiture. We can learn a lot about our perception of facial expression from the behavior of these cells.

It is this potential for plasticity of the relatively stereotyped units of the nervous system that endows each of us with our individuality.

I went to medical school after having decided to do so somewhere between my junior and senior year at Harvard - very late. I initially wanted to be an intellectual historian.