A name indicates what we seek. An address indicates where it is. A route indicates how we get there.

This is often mistakenly attributed to Jon Postel, but it is actually a very slight variation on a quotation from John Shoch; both RFC-791 and its earlier version RFC-760 include, at the point in the text where this passage appears, a reference to Shoch's paper Inter-Network Naming, Addressing, and Routing, which is the original source of this observation.