Jodi Picoult and philosophical or rhetorical implications in writing

Jodi Picoult begins the first chapter of her novel Vanishing Acts with the following paragraph:

You can't exist in the world without leaving a piece of yourself behind. There are concrete paths like credit card receipts and appointment calendars and promises you've made to others. There are microscopic clues, like fingerprints, that stay invisible unless you know how to look for them. But even in the absence of any of this, there's scent. We live in a cloud that moves with us as we check email and jog and carpool. The whole time, we shed skin cells - forty thousand per minute - that rise on currents up our legs and under our chins.

Write your own story with an opening paragraph that:
1) begins with a philosophically or rhetorically loaded sentence; and
2) expands on this with the remainder of the paragraph in a way that hints at the overall theme or tone of the story to follow,
before following with the action of the story.