"I remember being at a shoreline, watching a little grey fish heave itself up on the beach. And an older brother saying, "Don't step on that fish, Castiel, big plans for that fish. I remember the Tower of Babel - all 37 feet of it, which I suppose was impressive at the time. And when it fell they howled, "Divine Wrath!" But come on, dried dung can only be stacked so high."
"And of course, I remember the most remarkable event. Remarkable because it never came to pass. It was averted by two boys, an old drunk, and a fallen angel. The grand story, and we ripped up the ending, and the rules, and destiny, leaving nothing but freedom and choice. Which is all well and good, except... but what if I've made the wrong choice?"