Flow systems have two basic features (properties). There is the current that is flowing (for example, fluid, heat, mass, or information) and the design through which it flows.
In Koln, a town of monks and bones,
And pavement fang'd with murderous stones,
And rags and hags, and hideous wenches,
I counted two-and-seventy stenches,
All well defined, and several stinks!
Ye nymphs that reign o'er sewers and sinks,
The River Rhine, it is well known,
Doth wash your city of Cologne;
But tell me, nymphs! what power divine
Shall henceforth whash the river Rhine.
It helps to write down half a dozen things which are worrying me. Two of them, say, disappear; about two of them nothing can be done, so it's no use worrying; and two perhaps can be settled.
My advice to African leaders is to make sure that if, in fact, China is putting in roads and bridges, number one, that they are hiring African workers; number two, that the roads don't just lead from the mine to the port to Shanghai.
A colleague once described political theorists as people who were obsessed with two dozen books; after half a century of grappling with Mill's essay On Liberty, or Hobbes's Leviathan, I have sometimes thought two dozen might be a little on the high side.
It is my judgment that had I spent the first two years trying to get a single-payer system, all those folks who now have health insurance that didn't have it would still be uninsured. And those are millions of people whose lives are impacted right now.
I learned to recognise the thorough and primitive duality of man; I saw that, of the two natures that contended in the field of my consciousness, even if I could rightly be said to be either, it was only because I was radically both.
I feel great. I'm right there for the top two. I know my long is a very strong program and I've had lots of success with it, so I feel confident going into the long. Just fix up that loop.
When a man stands on the verge of seventy-two you know perfectly well that he never reached that place without knowing what this life is - heartbreaking bereavement.