Of trade, commerce and intercourse is not a declaration of a mere platitude, or the expression of a pious hope of declaratory character; it is not also a mere statement of a Directive Principle of State Policy; it embodies and enshrines a principle of paramount importance that the economic unity of the country will provide the main sustaining force for the stability and progress of the political and cultural unity of the country . . " 584 Then came the case of The Automobile Transport (Rajasthan) Limited vs The State of Rajasthan & orS., [1963] SCR 491 Das, J. who spoke for the Constitution Bench referred to the views expressed in Atiabari Tea Company 's case (supra) and proceeded to say: "We have tried to summarise above the various stand points and views which were canvassed before us and we shall now proceed to consider which, according to us, is the correct interpretation of the relevant Articles in Part XIII of the Constitution.