Ensure first sentence of each principle is both accurate and memorable

[scottrigby]

There has been some feedback about the initial summary sentence of each principle, as of v0.1.0.

1. The repeated use of "the principle of" feels repetitive

   The group agrees that prefix should be removed from each principle, but there is still the question of how to adjust what we're left with once removed.

2. Overall the wording of each initial sentence is a bit too complex, and not easily memorable.

   The group agrees that as long as the underlying meaning of each principle isn't lost, the intro sentence of each could simplified, and ideally be more "catchy".

   The group is however overall satisfied with the 1-2 sentence full description below each initial summary sentence. One exception could be potentially making principle 4 more explicit.