Just recently completed Hitman Absolution, noticed one very catchy tune:
To declare that a personal, inner experience gives certainty about the workings of the universe is to assign far too much value to one’s subjective sense of conviction.
I’m not that arrogant.
The brain, marvelous instrument though it is, isn’t infallible. It can misfire, seize or hallucinate, and it can do so in a way that’s utterly indistinguishable from reality to the person experiencing it.