Besides the obvious reasons why diversity is a strength, here's an interesting video (4m) of why maintaining minority languages is a good idea.

Maybe I like the yellow?

Careful with it. Fisher was a very depressed person and his negativity and despair can rub off on you.

He steams a good ham in general and there's some nice concepts in there but he's a mopey bastard throughout. Always keep in mind that this is the most "woe is me" whingeing thing you'll probably ever read and don't take it too seriously.