Among the given ideals and philosophy in the question, thoseenshrined in the Preamble to the Constitution of India are: Sovereign democratic republic socialism and secularism. The Preamble represents the aspirations of the people of India. It is the key to understand the mind of the makers of the Constitution. It has been amended only once so far, in 1976, by the 42nd ConstitutionalAmendment Act, which has added three new words- Socialist, Secular and Integrity- to the Preamble.