Thank you Berta for this great interview. Without commenting on the idea of sending four children to four different language schools and speaking different languages at home (not something I would do), what I most like about the interview is the fact that Berta shared it with us, and that we have a wonderful community of people here at LingQ who are sharing their interest in languages.
Sometime in the future we should be so lucky as to have a convention, where we meet all day long and every evening, hopefully in the summer in Spain where it is warm at night and we can eat late, outdoors, enveloped in the fragrance of the Dama de noche flowers, and just talk about language and human creativity and the natural human desire to communicate across all cultural barriers.