Meaning of Constitution:

• A constitution is a set of fundamental principles by which a state is formed or governed.  
• The constitution is the fundamental law of the land that fulfils a society's aspirations and goals.  
• It is a broad framework within which to pursue one's aspirations, goals, and liberties.  
• It establishes the fundamental values against which we must not transgress.  
• The constitution is a living document that grows and evolves in response to the needs and aspirations of a changing society through instruments such as constitutional amendments and judicial interpretations, judgements, Conventions, and Statutes.  
• It is a set of fundamental principles, basic rules, and established precedents (means standards/instances).   
• It identifies, defines, and regulates various aspects of the State, as well as the structure, powers, and functions of the major institutions that fall under the purview of the three organs of the Government: the executive, the legislature, and the judiciary. It also guarantees citizens' rights and freedoms and defines the relationship between individual citizens and the state and government.
• A Constitution, whether written or unwritten, contains the fundamental laws of the land. It is the highest and final authority. Any decision or action that deviates from it is unconstitutional and illegal.  

Functions of the Constitution  

• Constitutions can declare and define the political community's boundaries. These boundaries can be territorial (a state's geographical borders, as well as claims to other territories or extra-territorial rights) or personal (the definition of citizenship).  
• As a result, a country's constitution frequently distinguishes those who are inside and those who are outside the polity.  
• Constitutions can declare and define the political community's nature and authority. They frequently declare the state's fundamental principles and assumptions, as well as the location of its sovereignty.  
• Constitutions can express a national community's identity and values. Constitutions, as nation-building tools, can define the national flag, anthem, and other symbols, as well as make proclamations about the nation's values, history, and identity.  
• Constitutions can declare and define citizens' rights and responsibilities. Most constitutions include a declaration of citizens' fundamental rights. At the very least, these will include the fundamental civil liberties required for an open and democratic society (e.g. the freedoms of thought, speech, association and assembly; due process of law and freedom from arbitrary arrest or unlawful punishment). Many constitutions go above and beyond this bare minimum to include social, economic, and cultural rights, as well as the specific collective rights of minority communities. Some rights, such as the right to be free from torture or physical abuse, may apply to both citizens and noncitizens.  
• Constitutions can establish and regulate the community's political institutions by defining the various institutions of government, prescribing their composition, powers, and functions, and regulating their interactions. Constitutions almost always establish legislative, executive, and judicial branches of government. In addition, there may be a symbolic head of state, institutions to ensure the political process's integrity, and institutions to ensure those in power's accountability and transparency. Institutional provisions typically include mechanisms for democratically allocating and peacefully transferring power (e.g., elections) as well as mechanisms for restraint and removal of those who abuse power or have lost the trust of the people (e.g. impeachment procedures, motions of censure).  
• Constitutions can allocate or delegate power to different levels of government or sub-state communities. Many constitutions establish federal, quasi-federal, or decentralised processes for power distribution among provinces, regions, or other sub-state communities. These can be geographically defined (as in most federations, such as Argentina, Canada, or India), or cultural or linguistic communities can define them (e.g. the 1994 Constitution of Belgium, which establishes autonomous linguistic communities in addition to geographical regions).  
• Constitutions can declare the state's official religious identity and define the relationship between sacred and secular authorities. This is especially important in societies where religious and national identities are intertwined, or where religious law has traditionally determined matters of personal status or the resolution of civil disputes.  
• Constitutions can bind states to specific social, economic, or developmental objectives. This could take the form of judicially enforceable socio-economic rights, political-binding directive principles, or other expressions of commitment or intent.  

Types of Constitution  

• A constitution is a set of laws and principles that serve as the foundation for governing a country.   
• Constitutions are classified into two types.  
• A Written Constitution has been systematically and meticulously written down and embodied in a single document.  
• An unwritten constitution is one in which no provisions or laws of the constitution are written down but are documented despite not being included in a single book.  

Differences between the Unwritten and Written Constitutions  

THE IMPORTANCE OF THE CONSTITUTION  

• It establishes a political framework and distributes decision-making authority.  
• Our conflicts, aspirations, ideals, and national struggle are all reflected in the Constitution.  
• The constitution also provides one with a moral identity.  
• It creates, reflects, and grants individuals an Indian identity.  

CONSTITUTIONAL OBJECTIVE  

• "The Constitution envisions establishing an egalitarian social order that provides social, economic, and political justice to every citizen in a social and economic democracy of the Bharat Republic," the Supreme Court stated in 1997.  
• To enable the government to fulfil a society's aspirations and to create the conditions for a just society.  
• To define who has the authority to make decisions in a society. It determines how the government will be formed.  
• The purpose of the constitution is to provide a set of fundamental rules that allow for minimal coordination among members of society.  
• Limiting what a government can impose on its citizens.  

CONSTITUTIONALISM  

• A political philosophy that holds that government authority comes from the people and should be limited by a constitution.  
• Origins: King John of England's Magna Carta (1215) and the English Bill of Rights.  
• The Western concept of constitutionalism is negative in nature, seeking to restrict, disempower, and limit the state.  
• Components  
  • The rule of law (Developed by British ruler Dicey)  
  • Power separation (India follows the mixed separation of power model)  
  • Press and media freedom  
  • Independent judicial system  
  • Elected government (temporariness of government)