I think my train of thought here can be more adequately articulated by the master of wondering, Homer Simpson:
Every time I learn something new, it pushes some old stuff out of my brain. Remember when I took that home winemaking course, and I forgot how to drive?
If Homer's theory is correct, when my new found enthusiasm for learning French takes off, I'm going to start forgetting English. I'll start saying fromage and forget that I used to call the yellow stuff cheese. When I get down to learning some Latin, my brain be so cram-jammed full that I start forgetting the French words I just learnt.
Then who knows what will happen when I finally get around to refreshing my biblical Greek and Hebrew. I may be reduced to a gibbering wreck who can only compose sentences in fragments of several languages, most of which no one speaks any more.
Ego pense that estin time aller el bed.