Books Europe On The Move (1948)

(005320.38-:E-003569.93:N-HO:R-SU:C-30:V)   

The migratory movement is at once perpetual, partial, and universal. It never ceases, it affects every people, but at a given moment it sets in motion only a small number of each population; hence the illusion of immobility. In fact, there is never a moment of immobility for any people, because no migration remains isolated