The remarkable position in which we find ourselves is that we don't actually know what we actually know.

If a potato can produce vitamin C, why can't we? Within the animal kingdom only humans and guinea pigs are unable to synthesize vitamin C in their own bodies. Why us and guinea pigs? No point asking. Nobody knows.

In my day, the principal concerns of university students were sex, smoking dope, rioting and learning. Learning was something you did only when the first three weren't available.

I come from Des Moines. Someone had to.

A world without newspapers or a world where the newspapers are purely electronic and you read them on a screen is not a very appealing world.

I do find London exciting. Much as I hate to agree with that tedious old git Samuel Johnson, and despite the pompous imbecility of his famous remark about when a man is tired of London he is tired of life...I can't dispute it.

I wanted to quit and to do this forever, sleep in a bed and in a tent, see what was over the next hill and never see a hill again. All of this all at once, every moment, on the trail or off.