You may reasonably expect a man to walk a tightrope safely for ten minutes; it would be unreasonable to do so without accident for two hundred years.
![You may reasonably expect a man to walk a tightrope safely for ten minutes; it would be unreasonable to do so without accident for two hundred years.](http://cdn.quoteddaily.com/images/bertrand-russell/you-may-reasonably-expect-a-man-to-walk-a-tightrope-safely-for-ten-minutes-it-would-be-unreasonable-to-do.jpg)
You may reasonably expect a man to walk a tightrope safely for ten minutes; it would be unreasonable to do so without accident for two hundred years.