PLS HELPP!!! I'LL GIVE BRAINLIEST! What is the main idea of this quote?

"In principle, as in the ideas formerly laid down by the men influencing every national party, nationality ought only to be to humanity that which the division of labour is in a workshop-the recognised symbol of association; the assertion of the individuality of a human group called by its geographical position, its traditions, and its language, to fulfil a special function in the European work of civilisation.
The map of Europe has to be remade. This is the key to the present movement; herein lies the initiative. Before acting, the instrument for action must be organised; before building, the ground must be one's own. The social idea cannot be realised under any form whatsoever before this reorganisation of Europe is effected; before the peoples are free to interrogate themselves; to express their vocation, and to assure its accomplishment by an alliance capable of substituting itself for the absolutist league which now reigns supreme."