The quote in reference:
“It is not our part to master all the tides of the world, but to do what is in us for the succour of those years wherein we are set, uprooting the evil in the fields that we know, so that those who live after may have clean earth to till.”
And I'm doubtful the pope's message will reach Thiel the way he hopes it will, the guy will interpret the message as an endorsement of the work underway.