To rely upon another human being to such an extent is the height of folly, and religion has never been honorable except by proxy and illusion. (religion.blogs.cnn.com)
It would be the height of folly to fight the European elections on the sort of rabid anti-European policies espoused by UKIP. (conservativehome.blogs.com)
(Each participant in the impending «train wreck» agrees it would be the height of folly, yet insists it may be necessary as a matter of honour and political principle.) (newscientist.com)