Explanation: The Directive Principles of State Policy are enumerated in Part IV of the Constitution from Articles 36 to 511. The framers of the Constitution borrowed this idea from the Irish Constitution of 1937, which had copied it from the Spanish Constitution. Dr B R Ambedkar described these principles as ‘novel features’ of the Indian Constitution. The Directive Principles along with the Fundamental Rights contain the philosophy of the Constitution and is the soul of the Constitution.

Source: Indian Polity by Laxmikanth