Lera Boroditsky: How Language Shapes Thought — The Long Now

Languages are Parallel Universes

"To have a second language is to have a second soul," said Charlemagne around 800 AD. "Each language has its own cognitive toolkit," said psychologist/linguist Lera Boroditsky in 2010 AD.

Different languages handle verbs, distinctions, gender, time, space, metaphor, and agency differently, and those differences, her research shows, make people think and act differently.

http://longnow.org/seminars/02010/oct/26/how-language-shapes-thought/