If you could make male mortality rates the same as female rates, you would do more good than curing cancer.

I can't prove it, but I'm pretty sure that people gain a selective advantage from believing in things they can't prove.

Natural selection involves no plan, no goal, and no direction — just genes increasing and decreasing in frequency depending on whether individuals with those genes have, relative to other individuals, greater or lesser reproductive success.

The body is a bundle of careful compromises.

If you could make male mortality rates the same as female rates, you would do more good than curing cancer.