" Worldly knowledge, reasoning ability, and linguistic creativity quickly convert into a target language as soon as they are given a vehicle for expression. A 24-year-old, for example, who traveled, went to college, and and gained life experience has a much higher linguistic ceiling than the 16-year-old version of themselves. While they both start from square one, the one with stronger native language skills is going to progress further and faster. "
― Benjamin Batarseh , The Art of Learning a Foreign Language: 25 Things I Wish They Told Me