"The heart has reasons that reason will ignore"

Someone earlier quoted something for Pascal that I have trying to locate...please reprint his quote

which is certainly related:

"Of all forms of caution, caution in love is perhaps the most fatal to true happiness". ~ Bertrand Russell

How about this?

"If the nose of Cleopatra had been shorter, the whole face of the earth would have been changed."

                          - Blaise Pascal -