easy there now with the latin spells. from what i know, latin spells are much stronger than the usual spells that we have
And from what I understand, that idea is a complete myth. Magick is not in spoken language but in mental force. You can do magick without inacantations, rituals, etc, but simply pure will. The only reason we use words and rituals is to give us something to focus our powers with. The only language that is good for magic is the one that is best for you: I even do my spells in C++, Python, and BASIC sometimes. (yes, I know, natural programming major >!>;

As long as YOU know what it means (and not if you don't), a worded spell is a worded spell, and the language doesn't matter. (unless, as someone already said, you are going to another entity, which, if the original poster was looking for that: STOP. BAD IDEA.)