The root of disaster means a star coming apart, and no image expresses better the look in a patient's eyes when hearing a neurosurgeon's diagnosis.

I knew medicine only by its absence - specifically, the absence of a father growing up: one who went to work before dawn and returned in the dark to a plate of reheated dinner.

Everyone succumbs to finitude. I suspect I am not the only one who reaches this pluperfect state. Most ambitions are either achieved or abandoned; either way, they belong to the past. The future, instead of the ladder toward the goals of life, flattens out into a perpetual present.

Putting lifestyle first is how you find a job - not a calling.

The evidence in this universe for design - or, if you will, the fine-tuning that cannot be explained by chance or by 'enough time' - is so compelling that the only way around it is to suggest that our universe is only one of an infinite number of universes.

To understand the universe in the state that it began in, the so-called Big Bang, we need laws of physics that work better than our current set of rules and procedures, which break down when we try to push them back to the beginning.

I love Alton Brown's show 'Good Eats,' about the chemistry of food. It's really thoughtful.

I was never strong at maths, but I eventually got onto a university physics/astronomy course, and that led on to my Ph.D. and eventual employment.