“To have another language is to possess a second soul” Emperor Charlemagne.
It is indeed true. It is amazing, how one’s personality, gesticulations, facial expressions, and ways of expressing oneself change when one speaks a new language. I learnt 2 before I was 10–English and Hindi; 2 in my teens–Sanskrit and Bengali 2 in my twenties–French and Classical Greek; had babies in my thirties, and am now working again on fluency in French. Acquiring fluency in a new language is an exciting adventure!