The Preamble in its present form reads: 

WE, THE PEOPLE OF INDIA, having solemnly resolved to constitute India into a SOVEREIGN 

SOCIALIST SECULAR DEMOCRATIC REPUBLIC and to secure to all its citizens: 

JUSTICE, social, economic and political; 

LIBERTY of thought, expression, belief, faith and worship; 

EQUALITY of status and of opportunity; and to promote among them all 

FRATERNITY assuring the dignity of the individual and the [unity and integrity of the Nation]; 

IN OUR CONSTITUENT ASSEMBLY this twenty-sixth day of November, 1949, do HEREBY ADOPT, ENACT AND GIVE TO OURSELVES THIS CONSTITUTION. 

The Preamble to the Indian Constitution is based on the ‘Objectives Resolution’, drafted and moved by Pandit Nehru, and adopted by the Constituent Assembly. It has been amended by the 42nd Constitutional Amendment Act (1976), which added three new words: socialist, secular and integrity. 

Source: Laxmikanth.