They stay in place and aren't slippery because they have a rough surface.

The real world is not easy to live in. It is rough; it is slippery. Without the most clear-eyed adjustments we fall and get crushed. A man must stay sober: not always, but most of the time.

The surface does matter. You can stay in a little more of a dynamic position. You get more out of your running.

He that stands upon a slippery place, makes nice of no vile hold to stay him up

All these things were on her mind, stewing and stewing. And all these things boiled to the surface in one particular moment.

We knew that (working in New Orleans) was going to be rough and we were all ready to buck up and do what had to be done. In all of our imagination, we had no idea (the city) was going to be such a disaster.