Well, Pascal was a bit of an enigma. I don't know if he changed between the time he made his famous "wager" and the time he made this quote (taken from the book that both you and I own

) or if he was alternately lucid and loony.
I noticed that too... and I wondered about it... I think he was just trying to find a logical way to support believing in whatever nebulous thing he believed... or at least give the impression that he believed. I think he could recognize that religion made people loony, and still believe that some thing might be true or that some invisible something might punish you if you didn't believe... like today's deist maybe.
Pascal's wager seems very childish to me, but he lived at a time when there weren't as many satisfying explanations for what we observe as there are now... and the threat of eternal damnation for not believing is something you have to be pretty brave to scoff at.
For me it ended up being a no win situation because I could never figure out how to make myself believe something or what I was supposed to believe or how I was supposed to show this belief to please the invisible overlord with the nebulous rubric... so realizing that no one could know that any of this divine knowledge they claimed to know was a great relief for me. Before that, I would mistake confidence for competence--but there were so many conflicting viewpoints that I soon learned that every guy thought they were as right as Tom Cruise or the Pope or Plumjam no matter what their magical divine truth. Sure, all people think they are right--but the atheist doesn't pretend it's because of some divine truth that you are just supposed to have faith in!
I suspect a lot of women believe out of fear of not believing and angering the invisible misogynist in the sky who deems eternal torment a proper punishment for the descendants of apple eaters.
Dawkins notes, that it is much easier to be an atheist now because there are satisfying answers for questions we have, and humans have a hard time not knowing or understanding... they seem to take almost any answer over not knowing. And god tends to fill the gaps nicely and stick there via threats and ego stroking.
When reading the quotes and various people here, I recognize my own path in letting go of what I had been indoctrinated to believe versus what is really true. I suspect Pascal would have thought his way beyond his wager had he been alive in present times...
My brother kind of got my son to be a believer via Pascal's wager at about the age of 10-- but by 16 he had outgrown it and seen it for what it was.
He's certainly ahead in critical thinking than I was at his age. It feels good to own it and find your way there yourself--at least he won't have to undo the years of backwards sort of "non thinking" encouraged by the notions that have turned plumjam into the faith head that he is.
I him to learn to ask-- Is it true? How do you know? How can we test it? I wish I had these tools earlier. I was never cut out for faith.