"People who know one language think it's the greatest in the world. People who know more than one think they all suck."
The Blub paradox: http://www.paulgraham.com/avg.html
(BTW, the TL;DR is people that know more than one language admit they all fall short one way or another, but there are some languages that are more productive than others).
"People who know one language think it's the greatest in the world. People who know more than one think they all suck."