Max Brooks Quote

Zombies will try to scale any surface no matter how unfeasable or even impossible. In all but the easiest situations, these attempts have met with failure. Even in the case of ladders, when simple hand-over-hand coordination is required, only one in four zombies will succeed.

The Zombie Survival Guide: Complete Protection from the Living Dead (ed. Broadway Books, 2003) - ISBN: 9781400050802