From reading what Pascal wrote it's that atheists take the easy road. The are to sure of themselves. Pascal writes a bit later: "Whereas in my present state, ignorant of what I am or of what I ought to do, I know neither my condition nor my duty."

I might add that a lot of atheists shield themselves from the kind of experiences that make believers believers. It's one thing to have your spiritual experiences and then say, this is just my mind playing some tricks. It's quite another challenge to be actually go there and have the experiences and then come back and be stable in your atheism.

I remember a recent discussion where just because someone innocently dropped the word "god", suddenly half of the room was absent minded and in their own thoughts and stopped following the discussion. Someone who has strange of mind of the kind you get through meditating a lot doesn't get absent minded just because someone drops a charged word.