Language is inherent to culture and identity. The authority of human beings is restricted only to false boundaries that can be controlled. Nature and other things cannot be governed by some superficial laws of the will full people. By taking the reference of making the pigeons learn **, the author is pointing to this very constraint.
(or)
This sentence could possibly mean that however hard the authorities try to embed ** language in the culture of Alsace and Lorraine, the natural status of French, for them, will remain unchanged. French flows in the air and the entire place is imbued with its effect. Even though they train students in **, the basic mode of communication would remain unchanged like the cooing of the pigeons.
