A pragmatic way of applying the conception of yang and yin, @whatamidoing. Raising it in relation to the learning of a second language seems to me very enlightening and useful. Indeed, to remain alone with the strong and hard part that would be the study (theoretical, disciplinary) does not lead us to really learn in any plane, let alone a language. The practice, that which is open and flexible, is what allows us to always dominate something, by means of its alive and direct exercise. I find your considerations and recommendations very appropriate and pertinent, and I thank you, as well as @adsactly for giving us the opportunity to access your contributions. Greetings.