He of the wager?

What does "he of the wager" mean?

Background info:

I do not believe there is an atheist in the world who would bulldoze
Mecca - or Chartres, York Minster or Notre Dame,
the Shwe Dagon, the temples of Kyoto or, of course, the Buddhas of
Bamiyan. As the Nobel Prize-winning American physicist
Steven Weinberg said, 'Religion is an insult to human dignity. With or
without it, you'd have good people doing good things and evil
people doing evil things. But for good people to do evil things, it
takes religion.' Blaise Pascal (he of the wager) said something
similar: 'Men never do evil so completely and cheerfully as when
they do it from religious conviction.'