Quote:
Originally Posted by FDD
Fermat proved this to be a bad idea...
(Sorry, I couldn't resist, given the number of mathematicians reading this forum )

I liked that one
Quote:
This [i.e. the famous "Fermat's Last Theorem"] theorem was first conjectured by Pierre de Fermat in 1637, famously in the margin of a copy of Arithmetica where he claimed he had a proof that was too large to fit in the margin.

... and please note, that this theorem remained unproven until the 1990s ... and it was really long and hard  definitely not the proof, that Fermat was talking about.