Is this a good introduction for a prepared speech? [details]?

Question

The central idea is "Knowing a foreign language can be helpful."

My introduction:

"Engelska är inte det enda språket som finns; English isn't the only language that exists. That is to say that if I hadn't provided a translation for what had been said, you'd still be in the dark!"

Any criticisms would be great, thanks.

Answer 1

I think you'd be better off to say Knowing a foreign language can be helpful as your foreign phrase, then saying that although english is a universal language of business, Knowing a foreign language can be helpful and being bilingual is a definite advantage in today's world.