Don’t push the on-button if you don’t know where the off-button is. - David Gerrold

I also know that Christianity has held back any further advances in human consciousness for the past thousand years. And for the past century it’s been in direct conflict with its illegitimate offspring, Communism (again with a capital C). Both ask the individual to sacrifice his self-interest to the higher goals of the organization. (Which is okay by me as long as it’s voluntary; but as soon as either becomes too big—and takes on that damned capital C—they stop asking for cooperation and start demanding it.)
Any higher states of human enlightenment have been sacrificed between these two monoliths.

Life is full of little surprises.
Time travel is full of big ones.

Whatever our purpose, we probably aren't fulfilling it. We're not functioning as we should.
He shrugged at her. "How should we function?"
"Like human beings." She said it righteously.
"Isn't that what the human race is already doing? Functioning like human beings—squabbling with each other, killing each other, hating...?"
"That's not human."
"Oh, but it is. It's very human."
"Well, it's not what human should be."
"Now that's a different story. You're not talking about what people are, but what you want them to be."
"Well, maybe we should be what we aren't because what we are now isn't good enough. Maybe we should be dismantled."
"I don't think we have to worry too much about somebody up there doing it—we're doing it ourselves."