My Particular Friend footnotes: The Affair of Brotherly Love 4
Beginning with Mr Haversham Recovers:
‘There had to be a copy, Jane. It is a fact that information about the map had circulated and yet we found the map in the strongbox. Quod erat demonstrandum.’
Quod erat demonstrandum: QED, which was to be demonstrated
And at this he cried, without guile or concern for propriety. And finally I saw a look of compassion on my friend’s face. When finally Mr Haversham collected himself, she said, ‘You have done well for your brother. Your timing may have been ill advised, but I suppose ’twere well it were done quickly.’
Macbeth, Act 1, Scene 7
MACBETH:If it were done when ’tis done, then ’twere well
It were done quickly