The shortest distance between two points.

Was watching some Parkour videos and came upon this apparently famous commercial he did for the BBC.

from Wikipedia
Parkour (sometimes abbreviated to PK) is a utilitarian discipline based upon the direct, successful, swift traversing of one’s surrounding environment via the practical application of techniques, based around the concept of self-preservation. It is a non-competitive, physical discipline of French origin in which participants run along a route, attempting to negotiate obstacles in the most efficient way possible, using only their bodies.

Parkour is beautiful.