Full Idea
From an impossibility anything follows ('quod ex impossibili sequitur quodlibet').
Gist of Idea
From an impossibility anything follows
Source
William of Ockham (Summa totius logicae [1323], III.c.xxxvi)
Book Reference
Ockham,William of: 'Ockham's Philosophical Writings', ed/tr. Boehner,P [Hackett 1990], p.88
A Reaction
The hallmark of a true logician, I suspect, is that this opinion is really meaningful and important to them. They yearn to follow the logic wherever it leads. Common sense would seem to say that absolutely nothing follows from an impossibility.